I seem to attract a good bunch of girls (not bragging) but yet my weight seems to keep them away?

So yeah, i think i have a good personality, i've made plenty of girls laugh so hard they embar themselves and I know I have the cute part down ;). They all show signs of liking me, but yet they seem to be distanced by my slight potbelly (ok, it's normal sized, geez) or my overweightedness. I just wanna ask if a guy having a decent body is really that important for girls? Trust me, the girls i hang around aren't the shallow type at all.