Unsure whether he's just being polite or flirting? This flirting expert says these are the signs to look for.
1. Humour
Are they trying to target you with their jokes, trying to create a shared space between you? If so, it's a very good sign.
2. Body language
Positive signals are if they are squared up, facing you, with their feet pointed in your direction. The feet are a helpful guide — if they are angled towards you, it shows the person is into your conversation. Angled away? Chances are they are planning a quick getaway. Similarly, if they have their arms crossed, they're not really into it.
3. Touch
When someone touches you, there is a high chance they're flirting. Touch also releases oxytocin, the hormone we are flooded with when we are happy. So if someone is reaching out to you, it's a fairly clear indicator.
4. Attention
This may seem obvious, but if they're paying more attention to you than everyone else, it's a very good sign.
5. Proximity
When you first spot someone you're interested in way over on the other side of the room, and then, suddenly, you find them much closer to you, they have probably moved location for a good reason…
6. Eye contact
If they're scanning the room over your shoulder, it is unlikely they are focusing their flirtatious efforts on you. But, if they're repeatedly catching your eye, and signalling a spark, it's fair to say you have their attention.