My boyfriend thinks im to fat

So.. We been together for a few years. We have a 1 year old. I gained about 20lb from the baby and never lost it.. He never is interested in sex anymore.. He is always watching porn and looking at half naked girls on vines.. I feel so hurt.. He says I'm just not attractive anymore.. I understand I'm not as small anymore but I'm OK with it.. Is it to much to ask to be loved no matter what? He says now that I know the problem fix it? I haven't eaten in days.. I feel like not even living.. Its so hard to wake up and force a smile.. I love him so dearly.. Why oh why.. Must I be so ugly.. Ladies.. I'm hurting so bad..