Is this his first instance of douche baggery? If so, you might want to tell him again how hurt you are by his comment. You said he apologized profusely and he probably will again. Men say stupid shit all the time and he really may not have meant it the way it came out. However if he says stuff like this. Or ally you should drop his ass.

My wife is 5'0 and was 90 pounds when we met. You've never seen a chick with a hotter body. For, huge boobs, just awesome. Over the years she slowly crept to 100 pounds which is fine, and now 9 months after our first child she is 120 pounds. She still looks great, a little thicker with a small belly and that's totally fine with me because she's still very attractive and my wife and I love her. Now if I was pumped full of truth serum I would admit I would like her to have that pre baby body back but I would NEVER say that to her. It would hurt too much and it's actually not that important to me.

I guess my point is you need to look at the big picture. If he's said things during your relationship in the same hurtful way it might be time to go. If he's a first time offender, bring it up and make him feel really bad about it. And no, don't show him this post.