my body

so, genetically i guess obesity runs on my bio dads side. my mom is really scared id end up like them (long story short, he hasnt been in my life since i was 4 and he can go fuck himself). i constantly tell her I won't. i played sports from 5 up until inwas 18 and even then i worked out in college. since living on my own, i met my boyfriend of 3 years. i was about 130 (lots of muscle for my tiny body) when we met and about 6 months ago i went to the drs for an appointment and i came out to be 165. it doesnt look like it at all, but then again, i see it. ive worked out hard the last few months as my body tends to lose fat super fast. i keep trying to remind myself that i am healthy physically and i am in a very healthy relationship as a whole, but i still cant get past the fact that i got a little more "love" around my mid section. my boyfriend thinks im sexy regardless but i keep telling him I wanna feel good for myself. any advice?