<human>: I've been dating my significant other for about 6 weeks now. For the most part things are good. We communicate well, we have fairly similar outlooks on life and our kids get along decently. 

The big issue I'm having is the way he treats me periodically. He will comment quite often on other women's appearances to the point where it makes me feel uncomfortable. Today we were in a shopping centre with the kids and he saw two good looking women go into a juice store and suggested we follow them in. 

He also made two comments today about my weight. I'm not a small person by any means. I'm tall and chubby but I also recently lost 70lbs (F 6'1" 315-245). He's also a bigger guy which confuses me as to why he would say things like that. When he was saying those things it made me feel really self conscious and back to the way I felt when I was still 315lbs. 

When he doesn't act that way he's really sweet and caring. I am just confused as to what person will be around for the long haul. He also has trust issues as he left an 8 year relationship (4 years dating 4 years married) earlier this year because she cheated. 

I've come a long way with my self esteem and with the weight loss that I don't want his crude comments and negativity ruin it for me. Any suggestions would be greatly appreciated.

Summarize the given text in a few sentences.
<bot>: Boyfriend of 6 weeks is sometimes really sweet but other times comments on other women's appearances and also has recently started to make comments on my weight when I've lost 70lbs