needy or not?

So my boyfriend and I have been together for almost a year. We work together which means we always see each other.
Over the time we dated, I gained about 20 pounds. And now I am working out and eating healthy to lose it back. (He is aware that I'm working on it.)
However, I just feel like he's not attracted to me. When I bring it up he says no you're overthinking, you're beautiful to me, etc but I just feel like he doesn't see me the same.
He's not touchy, sometimes we go on a whole day without him kissing me once, very rarely holding hands, no butt squeezes like before, no initiating sex, or if he does it's pretty to the point (no foreplay or make out). 
In fact, we used to make out all the time!!!!! Now when I want to, he kind of keeps it short and says "well making out gets me turned on/gives me a boner and we can't really do anything now" as in we're at place or at a time where it wouldn't make sense to have sex. 
Am I honestly overthinking? I've brought it up before and it turns into an argument and he says I'm too needy.