How do I tell if a girl is gay and likes you.

I'm a sophomore and this girl at my school is a junior. We are in the same math class and same table in that class. She recently started sitting at my lunch table too. She does things like get really close to me.(we will sit on the same lunch bench and have half of it left.) She also touches and grabs on to me A LOT. And, yesterday at lunch, I was wearing ripped jeans, and she put her finger through one of the holes and rubbed my leg. I had to physically remove her hand! I also accidentally got two forks so she took some of my pasta. I don't like her in this way. She says she is straight. Do you think she is just afraid to admit it. What should I do? I need help! I don't want to have to keep prying her off of me. =O I don't want to lead her on and I don't want to be a jerk about it.

i agree with Lenzy
you should talk to her, and you should show her that you wouldn't get mad or anything if she was Bi or lesbian or anything like that.. so she can be totally honest with you.. and at the same time u'll keep your friendship :) and if she was Bi or lesbian tell her that you don't like her that way.. and prefer to remain friends :D cuz it looks like she likes you.. but there is a chance that she would be just playing with ya teasing you like my bff sometimes do =p

good luck and all :))

well , I think she likes you . I mean , why would anyone grabs , touches, and rub you right ? unless they like you . but I guess she's just afraid to admit that she's gay or that she likes you . well , if you don't like this happening to you cuz you think it's weird , why don't you just have a little talk to her . like only you two . and ask her if what's wrong or what's happening ? and tell her to be honest with you . maybe that'll make her spill . :) well , good luck with it .