Im with you there high school does suck alot. My advice for you right now is to just ignore it and don't make any attempt to flirt back with them or that will just cause a bunch of stuff between you and your partner.
See, that's the thing. I have done that. It's gotten to the point that my partener and I are getting VERY aggitated about it... XP Even out of school, high school SUCKS!!!
Just tell them that you have someone else on your mind that you like and tell them that you think you could be great friends but you're not ready for a serious relationship.
Okay, so...I guess I'll be the first to comment... You see, most people get now that I'm gay (that's why my page says that I'm a guy instead of saying that I'm a girl). Well, there's still guys @ school and on FB who keep flirting w/ me even though they KNOW I'm gay. Is there ANY way I can talk them down to just being friends? Online is usually pretty easy, but when I have friends here @ school...it's hard to see the dissapointment on their faces and in their hearts when they're turned down...