What should I do?!?!?!?!?!?

Carol
So basically , I have to ALWAYS remind my boyfriend of almost 3years to give me affection .. Because I'm a very affectionate person and it's like he's not and idk if I'm being selfish but I need more affection!!! We're young I'm 20 he's 19 and I feel like his sex drive should be through the roof!!! And it's NOT at all and he's just not satisfying me and basically I just want to know what to do about this .. He says it's going to change but this is his second time saying that!