Yes i know.. i'm old.. (20) and still have just recently had my first boyfriend... in this area i feel like I should already know all these things by my age, but ... I JUST DONT...

We've been together for around 2 and a half months to 3 months. And recently (2 weeks) he's stoped really hanging out with me... all together.. then just a few days ago he said he would come to lunch with me and my friend.. and for us to go ahead and go and he would meet us there... right after he finished capturing something for the teacher... well we went... 30 mins later we come back after waiting through 2 lunch periods for him to show, he never did, and i find him watching anime episodes on youtube.com ... that sorta ticked me of that anime was more important than me (and that he had LONG finished the capturing part for the teacher on our news segment). Then in the last lunch he goes with this boy.... to which he has been ditching me and my friend for, for 2 weeks now... Then when I emailed him asking why, he said that "I dont care, it's not my fault" ... then I replyed "I know that you dont care that I'm mad, but do you still care about me?" then he replied "It's not that I dont care that you are mad..." and he didn't even answer the question as to if he still cared for me... then when I asked "u still love me?" he ignored me... v.v I dont know what to do.. for the past few days we've kinda just either taken turns staying out of school to advoid each other... or just being sick to goto the nurse to leave the classroom.
I kinda need to know what to do...
My friends all seem to be giving me all these diffrent suggestions to which none of them have worked...