Jeffery Hall, an assistant professor of communication studies at the University of Kansas in Lawrence, says there are five main styles of flirting: physical, traditional, polite, sincere, and playful.

Physical flirting involves “communicating sexual interest” to a potential partner. Traditional flirting is a tactic primarily used by introverts, where men tend to take the lead and women assume a passive role. Polite flirting involves the use of “proper manners” and is a cautious way of showing you like someone.

Sincere flirting involves telling the person you’re interested, and playful flirts like joking around but their efforts rarely turn into substantial relationships.

A Reddit user, who has since deleted their profile, asked a great question on the AskReddit subforum that should be a big help to those who have a hard time spotting flirtation. They asked, "People who are good at flirting, what are some social cues us oblivious people should watch out for?"

A large number of people who responded to the thread gave practical advice on the behaviors that are a giveaway that someone is flirting. The most popular responses are eye contact and laughing at your jokes, even if they aren’t funny.

Here are 15 of our favorite social cues that show someone is interested.

1. The dance of plausible deniability.

"Everyone is giving good advice, but flirting didn't click for me until i heard it described not as a set of behaviors to look out for, but as an escalation of suggestive behaviors couched in plausible deniability.

"Put practically, if someone is doing something to engage you that feels extra (lots of touching, looking at you in a way that feels a bit to long, or doing a lot of poking fun and complimenting you), then that might be flirting or it might not. That's the whole point. Plausible deniability. They can safely disengage at any time.

"If you want to know if someone's flirting, you need to test it. You do that by escalating things, but just a bit, so that now you have plausible deniability (touch them back in a comfortable way, maintain eye contact, or joke-compliment them back). If they escalate back and continue to do so as you escalate in turn, that is flirting. Eventually one of you will break cover and do something with clear intent (a kiss, an approach + ask for a number, or straight up telling them what you think of them and that you're interested). Otherwise, if you escalate and they don't change their behavior or they back off, then they were probably just being friendly and you should take the hint and do the same.

"Dunno if that's something obvious to people, but it was definitely not for me, and college parties would have been way less fun had i not known. Hopefully this can help someone else too :)" – three_furballs

2. Give 'em a chance to be alone.

"If you're in a group of friends (new or old), find a natural opportunity to hang back. Someone who's interested in you will notice and take the opportunity to talk to you in private. Now this isn't full [fool] proof but it'll at least give you the opportunity to feel for any chemistry between you." – Kagamid

3. Conversation should be two-sided.

"Be wary of a one-sided conversation. If your responses are met with mostly "yeps" and "uh huh" and nothing without meat, its probably not going well." – ViciousKnids

4. Ignoring their friend.

"If they look directly at you while talking to their friend it's a good sign." – yassis_bru

5. The reaction shot.

"I read once that if someone looks at you after someone (doesn't have to be you) said something funny and everyone is laughing, they like you. From personal experience, it's true." – luv_sicK

6. Lots of eye contact.

"They make a lot of eye contact. They are interested in what you have to say and ask you lots of questions. They laugh at your jokes, even the lame ones. They initiate physical contact. They try to find space where you can talk more privately (this does not always mean sex but it often means they wish for more quality time with you)." – TheSurfingRaichu

7. Trust then test.

"In my experience, almost everyone can get a sense that someone is into them, but most people second guess themselves until they convince themselves it's nothing. I say trust that sense. It's based off all of these factors that we pick up consciously and subconsciously, and almost always it's not a coincidence.

"When you think someone likes you, you can test that theory in a few ways. A subtle but effective example is inviting them to something you know they can't or don't want to attend. If they express interest in rescheduling or finding some other way to spend time with you, they like you. Otherwise they'll just say no, sorry I can't make it ... Of course, you could also just ask. In my experience anyone worth getting intimate with is mature enough to deal with that question." – MildlyWyld

8. Mirroring.

"Does their body turn toward you or away from you when you talk? Do they mirror your body language?" – Perfect_Draw516

9. They touch you.

"Physical contact. Granted, not everyone flirts the same way but a good sign is if they touch your arm (or the like) or you find them smiling the whole time that you’re talking to them." – Cosmic_Marman

10. Special eye contact.

"When you're in a public space, the direct eye contact (for a beat or two too long) and the look away. One of my go-to moves that always yielded results." – LuLu42

11. Bad jokes.

"Seriously tell a bad joke - look for laughter and smiles that should not be there but are. Then it’s you they are into, definitely not what you said." – YukonBrawler

12. Facial gestures.

"According to Sherlock: licking lips, eyes cast down towards the other persons lips, quirky smile of the lips, dilated eyes. And if the person has long hair, tucking it behind their ear or other fidgety behavior." – fandomfangirl1

13. Mimicking body language.

"In the case of someone who likes you, while interacting, watch for repetitious patterns and mimic their body language. Eventually, if you cross your arms and the person whose attention you are seeking does the same, for example, you can rely on that being a good sign." – flungkle

14. Little adjustment.

"I've noticed that women will do a little adjustment to you, like brushing off a little piece of lint off your lapel or moving a stray hair off your face while talking to you. At least they did back in my rogue days." – robfrankel1

15. Take your shot.

"If you're at a bar and a woman makes eye contact for more than a second without looking away, shoot your shot." – sle7in360

There you have it! If you're picking up any of these signs, it might mean you can go ahead and shoot your shot (respectfully!). Good luck out there!

This article originally appeared three years ago.