Co-worker asked me out.

Hello I'm 23 (F) and I have a question I just broke up with my bf 3 months ago. I have a coworker 44 (m) that proposed to me to go out with him due to being highly compatible. I don't mind the age difference, his kids are great and he's pretty handsome. Thing is that we've been best friends ever since I started working we both went into the company the same time. He asked me out with his kids I'm really nervous but what I'm getting at is that we've been BFFs and I didn't know he saw me like that. Especially since I was taken, so I really don't know how to feel about this. I'm over my previous partner, but I think I need time to heal. Would going out with him help out?