BOY+GIRL=???

Why do boys cannot talk to girls? Can boys onli talk to their own gender and girls only talk to their own gender? Lately i have been said by some people that I like to be around girls and that I like to 'kao' girls. So i have been thinking, why must there be a border? I mean do I talk to girls more than boys? I think not, since i normally spend my whole day in school talking to the guys that are surrounding me. Does talking to girls mean I am a person who likes to be with girls or 'kao' girls? Does it mean that I have a negative objective or that i am a PERVERT?!?! I really don't get it... I heard some guys even tried to 挑破 my friendship with other people. But well i really don't care~ Here i am going to state why I find girls to talk sometimes:
1.Since we are all in the same class, I don't see any reason why gender has to be a problem
2.Do those people think I got alot of topics to talk to boys? Boys always like to talk about football,DOTA,pervertic stuff,sports,shows and etc.
  >For football, I have never EVER see more than 10 football matches in my life, and I don't even know more than 5 footballers names.So in those people opinion, will i have fun talking about this thing which i don't even know about? So now i am suppose to force myself to do or talk about something that I don't like in my free time isit?
  >For DOTA, in my opinion its just a stupid game that makes u scold your friends or be scold by your friends.I don't see any education or things that I can learn from the game. Thats why I stopped playing it for a few months.So I am supposed to talk about a game that i don't play? Oh ya, maybe i am wrong, DOTA does teach us something, that is it teaches us words such as: Fck u,cb, mcb, lj, noob la u, chao hai dunno play dun come and ply la,sohai, o0o ks me ah, and some even more 'nice' vulgars ^^
  >For pervertic stuff, well maybe it is a funny and nice topic to talk about sometimes, but when it is mixed up with reality then i guess I don't really like it... especially when i hear some boys talk about how they flirt girls and what is their objective =.=''' kinda feels abit.... weird.... haha
  >For sports, I am not really good at any sports, so I don't really get 'cared' when they are talking about sports that they play. Thats the reason why i need to organise badminton outings every wednesday, or else i guess no one would call me to play badminton.At least after a have organised quite a few times to go play badminton, some people in return has called me to play with them, but when it comes to talking about the sport, since i am very lousy at it so if I say anything I would naturally look like a noob trying to show off. So i normally prevent myself to talking about sports.Basketball is even more JIALAT...
  >For shows,in terms of movies well sometimes I don't really see much movies so i don't really get what they are saying, for drama, the drama that most people see I also don't see, for anime, got 1 specific guy everytime like to talk to me about anime that i don't even see and he has the ability to talk mt me about it for hours and hours =.=''' and he would talk to me about it as if I have already saw the anime...Quite some talent he has there though i would say... haha

SO with this, how do you think i can talk to boys... girls at least have some social topics to talk about...Well not to say boys have entirely no topics to talk to haha =P
Well thats all for this post, the last few weeks were really full of stress. Hope i don't commit suicide or get eaten by bigger fishes~