HELP PLEASE

So i have this friend who i have been friends with on and off now for a while and well i still want to be her friend but i dont know what to do about it we will see eachother next year but you kow i dont know what to say to her and well..... im just really confuzed and then i have another friend who mite be leaving the school so i probably wont get to see her that much either so people i need some help should i stay friends with that one girl or just hang with the guys and this guy acts like he hates me around his friends then we email and hes really sweet so i do want to know do you think this guy is good enough 4 me or shouls i keep looking and well..... i dont wanna seem that desperate but i do really rreally like him so if you guys could just help me out and comment on what i should do in these situatitions then please do because i am most confuzed rite now.