Just try to talk with him with any opportunity you get. Look open adn smile when he cathes your eye. Not asking to be fake, but look and act (unless you're that way naturally) friendly, enthusiastic, fun to be with, etc. Show that you're a great and interesting girl who wants to know more about him- show that you're interested in him, if possible. And, back to the opportunity thing, make sure you guys are alone or alone-ish (lol). Like, a bit on the side if you're in the hall with tons of people or something. Just make sure that girlfriend of his can't be around... like, if she's sick one day, immediately take action! It could be the only chance you can get! Anyway, during every chance you get, talk with him more and more. Make him want to talk with you. How? Leave when he seems to get interested! I'm sure it'd work.
Well, what I'm trying to say is, considering everything you said I think it's best if you slowly become refular chat friends and eventually he'll probably be interested in more with you. So, hope this helped and best wishes for you! :)
P.S. If the girlfriend EVER finds you and the guy together, chances are she'll probably act bitchy. Therefore, act hurt and quickly go- then, the guy will see how terrible his current girlfriend is and see how much better you are! Besides, the spark between the girl and him seems to pretty cooled down anyway... ;)
You can also check out a website called, "MyJellybean.com" It's a really great site with cool flirting tips. If you're brave enough, try them out! Good luck if you do! ;)
· 1 decade ago