New Boyfriend?

Well, after my ex-, i was very depressed. i couldnt think straight for a while. a couple days later, this other complete total hottie asked me out. i dint no wut to do.but in the end, we decided to be bf and gf. we've only kissed twice (i gotta say, hes a da*n good kisser. but hes been acting very strange lately. also. hes been hanging around with my new best friend. aand my ex-, well... he started having with my ex- best friend. so i dont no bout this guy. cuz my new boy friend hangs around too much with my best friend. and wen i want to b with him, he starts making these whiny faces at me wen im not looking. What should i do??!!