Eight of the biggest dating red flags

If your date does any of these things, they might not be a keeper

Turn up looking presentable - and don't be high (Monkey Business Images/REX Shutterstock)

Wasting time on a bad date isn't the end of the world, but you don't want to committing to a relationship that is not right for you.

It can be hard to discern from a first date or first meeting whether you could be looking at your future spouse or a relative human disaster.

Thankfully, users of question-and-answer website Quora users have provided some tips to at least begin to differentiate between the two - with the following red flags among those to look out for:

Judgmentalism

"Whether of me or of anyone else in the vicinity. This includes ranting about individuals or categories of people, whether it's a race or political group or whatever.”

Messy home

“This is what they care to live like, this is what they wanted it to look like for you, all shreds of aestheticism are just in the patterns of the sheets, nowhere else.”

'I'm high'

“Oh okay, didn't want this date to be weird at all, but on top of it you're not sharing the devil's lettuce either. Good thing I'm totally okay just hanging out by myself while you nod to the background music.”

Someone who doesn't respect you

“This should go without saying, but if they are mean, cruel, or don't respect you or your boundaries on the first date, it's a no go.”

Not looking reasonably presentable.

“Take a shower, comb your hair, and put on clothes that are clean and are appropriate for we are going to do. No, you don't have to look like a model - jeans and a sweater or shirt will do unless we are going someone fancy or somewhere very casual. But I don't want to smell you. Shower and brush your teeth, please.”

Complaining about your friends

“Even if you think they’re right, a new partner should know to tread carefully, because your friends have a more permanent place in your life than they do, and expressing distaste before gauging the situation is a sign of social inexperience.

Being rude to people around them

"It's easy to be nice to someone you want to impress. But are you nice to the waitress, and the Uber driver and the ice cream server? Those are real tells of character. If someone is mean to the people around them, that's a red flag."

Talking in detail about exes

“If you were married before and/or have kids, yes, tell me. But I don't need to hear you rant on about your divorce, or that horrible break-up you are still trying to get over. Unless those relationships have a bearing on our relationship, leave the past there.”