I'm a bartender who's witnessed countless first dates - here are all the things you're doing wrong

It's also funny to me when people take a different date, week after week, always to my same bar.

We bartenders won't do it on purpose, but you are running the risk of having us inadvertently reveal your penchant for dating around, which also might not be a good look.

"Hey, there. Same as last week? Old Fashioned for you and a Bee's Knees for the lady?"

In my effort to flex my ability to remember your face and drink order, it's not uncommon to accidentally reveal you were here last week with someone else. Someone who in this case apparently likes to drink a Bee's Knees.

Always check your card balance before you go out to make sure you have enough to cover your bill. Or if you're out of town, make sure your bank won't lock out your card for security reasons.

I always try to be discreet if I can tell someone is on a date when their card is declined, but if you don't have cash or another viable card, that date you intended to treat may end up footing the bill. Awkward.

Always tip your bartender 20%. No matter how the service was. Every time, whether you're on a date or not, frankly. But especially on a first date.

Because even if waiting tables or making drinks isn't your date's current profession, you never know if they were a former service industry worker themselves, and will be sensitive to the issue.

I can almost guarantee they're going to check and see how much you tipped. And a good tip will show them you acknowledge the hard work that goes into a service industry job, which usually comes with a base rate below minimum wage.

A tip higher than 20% would be, ahem, uber classy, and would demonstrate generosity.

And if you know that your date has worked as a bartender and still don't intend to tip 20%, just stay home.

Side note: If a customer gives me their phone number while I'm bartending, but they tip less than 20%, I'm immediately throwing it away.

This one probably speaks for itself.

I remember a gentleman once showing up early at the bar for his date. He pounded two double vodka sodas by himself. He pounded another double vodka soda by himself when his date left after an awkward hour of squinting, swaying, and not saying too much.

It's also pretty awkward to get cut off by the bartender on a date with someone new, as happened to me just a few weeks ago. After balking and accusing me of simply not wanting to serve him, the young man — yes, it's usually the men over-imbibing — left a one-star Yelp review about it.

I imagine being cut off in front of your date is less embarrassing than falling down the stairs at a three-story bar, so I maintain that I was helping him in the long run.

I've seen more than one dater's eyes glaze over as their date regurgitates a spectrum of emotions on topics relating to their exes, drug use, daddy and mommy issues — the list goes on.

It's one thing to have a back-and-forth where you've connected on deeper, emotional topics on a first date, but when it's a monologue, it's like watching a therapy session. A really awkward therapy session.

Even traditionally "safe" topics, like travel, can go awry when daters use it as a conversational crutch.

From polling other bartenders, I can say the television show most heavily abused as a first date conversation topic that goes absolutely nowhere is "The Office."

So if your conversation is going this way: "Have you seen 'The Office'? No? Well there's this scene where …"

Stop at the word "No." Do not pass Go. Do not collect $200.

I've seen a lot of dates become deeply uncomfortable because they start to resemble a job interview.

Often, the questions are too probing and invasive.

If you're trying to figure out your date's marriage goals, bank account, and family disease history on the first date, you probably won't get a second.

Just don't.

Or maybe do. They are loads of fun for me to hear.

The best so far was a guy on a first date revealing he believed that "the moon is a manmade construct." A serious level-up from the "we faked the moon landing" theory. Not as good as the "moon is made of cheese" hypothesis, though.

I remember one incident where a guy was so freaked out by something, that as soon as his date went to the bathroom, he had to tell the bartender I was working with: He thought his date was great-looking, but her dating profile pictures must have been at least 15 years old.

People may be judgmental jerks about your appearance. But some won't be. Misrepresenting yourself, on the other hand, perturbs everyone.

I think it's a good thing when a couple on a date can make good conversation with the bartender. People reasonably make character judgments about others based on how they treat those serving them. Warm conversation can go far.

But men in particular are enormous offenders of bad bar chatter with the bartender when on dates.

Sharing enthusiasm on spirits, asking questions, and even sharing some information is fine. Condescending sermons on things I already know, like the difference between bourbon and rye, do not impress me and do not impress your date.

The look I will give you while I make your Ramos Gin Fizz — an eight-ingredient cocktail that requires so much shaking that some bars just use a blender instead — will indicate to your date that you are a bona fide jerk.

Especially if I can tell you ordered one in an attempt to seem impressive.

Any time I've been serving or bartending and a dater bickered over trivial bill errors (that often weren't actually errors), I usually notice a curled lip response from their date.

You don't look assertive. You look cheap and petty.

Likewise, don't send back a drink when it's not exactly to your liking. Suck it up.

Don't insist that I pour a cocktail meant for a stemmed coupe into a rocks glass in front of your date.

Plus, as I have in the past, I will make the next drink three times as effeminate just to make you reveal your fragile masculinity all over again.

Please, spare your bartender. We aren't like servers. We're stuck in front of our well.

And you always seem to insist on sitting right in front of us.

Sure, witnessing the schadenfreude can be entertainment. But it's mostly just cringeworthy.