Every time 'Riverdale' stars Lili Reinhart and Cole Sprouse have opened up about their relationship

On Sprouse's birthday, Reinhart posted a photo of him on Instagram and captioned it with a short poem.

"I tried to find a poem / that I could send to you. / Because my words were failing me. / But I searched and found nothing that did you justice," she wrote.

"All of these love poems can't get it right. / No one else's words could ever fit. / They haven't known the fortune it is to love you," she continued, adding the poem was a "sappy" birthday one for Sprouse.

Read more:

• Cole Sprouse and Lili Reinhart have always tried to keep their relationship status private. Here's a timeline of their interactions.
• 20 interesting things you didn't know about Cole Sprouse
• 10 things you probably didn't know about Lili Reinhart

The pair were interviewed separately for the cover story, and they both opened up about the hardships of being in a relationship in the public eye.

Reinhart said, "Now that I'm X amount of years in, I do appreciate the privacy we have, that he's encouraged me to take. No one knows how long we've been together, and no one will until we're ready to say it. No one knows how we fell in love, except for our close friends and us. It's really special."

Sprouse said, "My own happiness and her happiness come before caring about what people are saying."

Amid reports they had broken up, they both posted the W magazine cover to their Instagram feeds with sarcastic captions. Reinhart's read, "BREAKING: A reliable source has confirmed that none of you know s---," and Sprouse's read, "UNPRECEDENTED: Cole Sprouse and Lili Reinhart consume the flesh of 'reliable sources' to fuel their bacchanalian sex cult."

"I took [Lili] on a date where we drove to this location deep into Canada and I surprised her with a big hot-air balloon adventure, which was quite a bit of fun," he told the publication in March 2019. "I like traveling quite a bit. I like road-tripping. Those grand experiences always end up yielding the greatest memories and the greatest romances."

He shed some light on his own ideal date, saying, "My language of love is quality time. I'm not really the type of person that likes going to a movie and sitting in silence. Maybe a little breaking and entering. Some photography! Who knows?"

"We legitimately could not stay away from one another," the former Disney star said about their decision to start seeing each other.

He also opened up about the couple's struggle with deciding how much of their lives to share with the public. "I've girded my private life very intentionally," he said. "It's one of those things that I still sort of grapple with, and Lili and I grapple with."

She posted on Instagram after attending the premiere of the film with Sprouse.

She captioned the post, "I am so in awe of @colesprouse and @haleyluhoo for their work in this film. The last few days have been hard on all of us ... and this film touches you in a way that makes you feel incredibly grateful to be with the people you love. I can't express enough how moved I was by @fivefeetapartfilm — I can't wait for the world to see it."

"It's not something that we hide, or it's not something that we show off. It's just something that exists," he told to the publication in an interview published on Valentine's Day.

Reinhart posted an intimate photo of the couple and captioned it, "You make me very happy. Happy Valentine's Day, my love."

Sprouse also posted for Valentine's Day with the caption, "Quite actually the only thing keeping me sane is @lilireinhart."

"I think he is such an incredible photographer, really," she told Who What Wear. "Sometimes he's inspired by a location, and he's like, 'I want to shoot you here.'"

"Other times, I'm inspired by a dress, and I'm like, 'I want you to shoot me in this.' Our photo shoots are very intimate, just him and me; no one else is there ever," she said.

"I think it's just that I'm so protective over it," she said about their romance. "It's not something the world needs to know about, because if you give them anything, they are just going to want more."

She continued, "I'm not going to hide away from my relationship or hide away from what's going on in my life, but what does happen in my relationship is so private, and I cherish it a lot. He does as well. A relationship is a very intimate thing, and I want it to be between me and him, not me, him, and the world."

"Cole is one of the smartest, the smartest person, that I'm friends with," she said. "He's incredibly passionate about art, about photography, about acting, and I really admire that."

She added, "I said you're very loyal to your family because you are."

Sprouse also had complimentary words to share, saying, "She's one of those people that consistently pushes me to be better at the arts that I'm pursuing. That's just the kind of person she is. She inspires excellence out of everybody she works with."

Addressing Reinhart later in the interview, he added, "You are by nature a caretaker and an extremely nurturing person. You just want to make people feel better and help people get through whatever they're getting through."

"Lili was a tough egg to crack," Sprouse said of his first impression of the actress. "She's very shy at first and reserved. I think it was about halfway into the first season she started letting people in truly."

Meanwhile, Reinhart joked, "I thought his voice was annoying. That was my first impression. I was like, 'That guy's got an annoying voice.' And now it's grown on me, I guess."

Sprouse posted a topless photo of Reinhart to his Instagram with the caption, "Both the birthday and the gift. My little muse, happy birthday my love."

"I'm not going to tell you my love story," she told the publication. "That's just not appropriate right now."

"He really brings us down to earth if we're feeling like something we've said is being taken out of context," she said. "He's always the one to be like, 'Just ignore it. It will blow over.' It's a nice, calming energy he has because you know that he's been through it."

"People are just dying to know information about if I'm in a relationship or not," she said in an interview with V magazine. "I understand the interest, but it's called a private life for a reason. And it's not something that I owe the world."

The actor said he refused to confirm or deny the speculation, saying, "Whether you dismiss those rumors or whether you encourage those rumors, it's giving people who are, in my opinion, a bit entitled to your personal life, more power."

He continued, "It's also sexy, these parts of the relationships that are just yours."

"[There will be] a little bit more of that, which is going to be good," Sprouse said of season two on "Live With Kelly and Ryan" in 2017, according to Glamour magazine.

He joked, "They're contractually obliged to give me as many kiss scenes as possible this season. I wrote it into my contract."

"Since the show began, people have wanted Lili and I to be together," Sprouse told Entertainment Weekly in 2017. "People have wanted Lili and Camila [Mendes] to be together. People have wanted KJ [Apa] and I to be together. People have wanted every actor on this show to be in a union that they could make real."

He continued, "Truthfully, it's very pleasing that people talk about Lili and I in that way because it means that we're resonating so strongly that people really want that to be true."

She captioned the photo, "To the man who has showed me more beautiful places in this past year than I have ever seen in my whole life. Happy birthday, Cole. Thank you for all of the adventures and here's to many more."

This post came a few months after fans first speculated Sprouse and Reinhart might be together in April 2017.