Is my boyfriend going to break up with me soon?

well we have been going out since september 09 and everytime i talk to him he says that im pretty and that he loves me and when i asked him to the valentines dance he said yes and never showed up. also he wont talk to me at school .we are both very shy. everytime i call him he says hes busy and he will call me bac but he seldom does. and im really confused because his best friend told me that he wanted to have with me... what should i do? should i break up with him before he breaks up with me or just play it cool and give him what he wants?