I look like a actual skeleton and my boyfriend is no longer attracted to me

I have tried to workout eat right I do have a 6 pack but NO boobs and a small butt I want biger arms they look like noodles my legs are very thin how can I look fuller but stay slim at the same time...I often found him looking at other girls with larger boobs and butts how can I get bigger boobs and brest and fill out more? I turn 18 in November so will be starting going to the gym then but what can I do at home in the mean time?

Edit: this is something I have personally wanted for a long time as well.My boyfriend has never told me I'm unattractive or anyhting of the sort I just want to FEEL more attractive.