I'm felling really low ?

well for the past few months ive been feeling really down. mostly because ive lost all my friends and my boyfriend. i dont really know what happend with my friends.. we all sorta just, moved on ! and now ive got no-one. my ex was a total A***! + he dumped me. so that kinda knocked my confidence. im at college and have lots of 'friends' their but not real , real friends? if you get me.. i just dont like my life very much and im only 16! any advice? thanksss x