marriage...babies...etc

My boyfriend and I have been dating for 5 years now and he still says he’s not ready for marriage or babies. I’ve tried talking to him to find out the reason. I am a perfectly good women to him. I cook, clean, work (shift work), anything he needs I’m there regardless and I love him with all my heart. We have been living together for a little over 4 years. Anyways when I ask him why he’s at least not ready for marriage he replies that everyone he knows end up getting divorced and tell him their “tragic divorce stories.” I just feel like I’m hanging on to something and I’m not getting anywhere. I don’t want to leave him over this situation, but I just don’t know what else to do. Also another problem I have been having with him……sorry to lay so much on whomever is reading this….in the past 5 years I have put on weight and we broke up over it once before and I lost some and now he’s telling me that I need to lose my thighs. I have always had thick thighs as well as a thick body. That makes me feel like he’s getting bored with me and has chosen the route to pick at certain things on me and about me so that we will break up. Let me tell you, I am a pisces and we pisces read into things alot more than ‘normal’ people do….whatever normal is, right ?!?! lol