Should I? 😬😳🙈

Sooooooo let me start off by saying I'm a first time mom to a now 7 month old baby girl. I become a mom at 19 and 2 months later I turned 20 (the greatest moment of my life was becoming a mom) anywho a month after my daughter was born I had broken up with her father, after dating him for 3 years. Reasoning being that had cheated on me multiple times while I was pregnant and I mean heavily pregnant soooo I didn't feel too good about myself especially after I found out. It was time for me to stop focusing on our relationship and be there 100% for our child. And it has been wonderful, for me but not so much him cause he still wants me back but I've completely moved on. With that being said I thought it was time for me to start talking to other people cause I had everything down, for me and my baby. A little bit over a month ago i started talking to this guy (that just so happens to be at my moms job) lol it's a plus cause I can go up there to see him. Buuuut just recently he talked about sex with me, but not in a way I thought he would. He said that he wants to admire my body especially after having my baby, and when I showed him my stretch marks on my stomach he found them attractive. It made me feel so good about myself the way he talked about me in ways I never even would've thought about myself. Im just so scared about opening myself up to that again and I get so insecure, I dont wanna get used again (and he reassured to me that he would never do that to me)(btw this guy is almost 28 and has a 5 year old daughter) Hes an amazing guy (in my opinion)(and another crazy thing that I didn't know until recently is that he and my baby daddy know each other 😭 ugh what do I do with that too, do I tell baby daddy that I'm talking to him?????) my real real question is, should I take the next step with him or wait it out a bit longer just to see?