How do you know if a girl is interested in you?

If I'm interested in a guy I want to be around him as much as I can. Like the other answers if a girl goes out of her way to be around you it is a good sign. I'm really into looks. Not as in physical appearance but the look in someone's eyes. They really are the window to a person and looks can be very telling. I don't really get nervous like some younger girls will and look away when a guy looks me in the eyes. I will look a little longer. It let him know I am comfortable being around him. Also if she is looking you in the eye and she can't help but smile that is good too. I'm sorry you had a bad past experience but don't let that keep you from what you want.

If she's usually talkative but clams up or seems nervous around you, she might like you.

A few other hints:

She goes out of her way to talk to you or be next to you.
She laughs at all of your jokes, even when they're not funny.
Suddenly acts interested in all the things you're interested in.
Blushes or stumbles over her words around you.
Dresses nicer than usual when she knows she's going to see you.
Tries to touch or lean on you when possible.
You catch her looking your way, and she immediately looks away when you catch her eye.

Good luck!

Well when I like a guy I act shy around him, get nervous talking to him on the phone, text him more than I call, laugh at all his jokes/him, smile, spend time with him, if I happen to touch him/brush against him I don't move, I have trouble lookin at them since I feel they might see my true feelings, find a way to see him, tell him I am thinking about him, etc. etc. if varies from girl to girl.

Well when I like a guy I gave out the wrong signals! lol. I am shy so if I liked a guy I would 1) Stare, but as soon as they looked in my direction I would look away. 2) I would blush if they looked at me and then I would look down. 3)If they did talk to me, I would be very nervous. If they joked around with me, I would laugh at their jokes even if it wasn't even funny. 4) Try to be near them even if I am not even looking at them. I may ask them for a pencil or something silly like that. 5) Then there is the cold shoulder. I know that isn't a very good way to show interest. But if he didn't make a move, I would begin to feel stupid and ignore him. Unless he starts to flirt with me. If nothing happens and he still never asked me out, I would begin to think he never really cared or even liked me, and I would try my best to ignore him. It would be better to make a mover sooner than later, because if all else fails and nothing happens, I go into the cold stage. :(

I don't know if this girl is like this, but it is better just to take a chance and go for it. If she did show some of these "shy" signs and now ignores you. Well, she probably still likes you a lot, but is just afraid to get hurt, so she closes off. :(

Well, it depends on the personality of the girl. Most people would consider me shy, so here is what I do:

1) Be around him. If she's never hung out with your lunch group before and suddenly, she's there, you might consider that it's because she wants to be close to you, even if she's not saying much. Personally, if I couldn't get that close for some reason, I'd try to keep him within eyesight.

2) More laughter than usual. If you're funny and she's always laughed at your jokes, but suddenly she's laughing more than she usually does, she may like you.

3) Eye contact (more or less than usual). If you catch her gaze a lot, especially if you're at the same table or in the same area. Other times, I had a hard time meeting his gaze.

4) Physical contact. Pay special attention to this if she's not very touchy-feely. The guy I like is the only guy that I'll hug back.

5) Blushing, etc. I blush easily if embarrassed, but even more so if he's paying me any special attention.

Then of course, there is also smiling and the like.

If I only liked someone as only a friend, I'd pretty much do the opposite of what I just said. If I let him hug me at all, I'd probably stiffen up and be very uncomfortable. I also would definitely not hug back. If I did hug back, if you were a fairly good friend, it would be very short.

I also might meet his gaze, but only when he's talking to me. If otherwise, I'm not trying to catch his eye, I probably don't like him in that way.

okay sooo I had this exact problem. umm what I did was I chilled with her and every so offten id pull her aside away from everyone and do somthing kinda romantic. and when you do the first few seconds are key. look at the way she is standing where her hands are everything. and you will be able to tell weather she's interested at that moment. but look at her eyes you can tell a lot about what she's thinking through her eyes. hope this helps. if you need anything msg me ill try to help