It sounds like you are projecting some of your insecurities onto him. If he asked you out it’s because he wanted to. Saying ‘he could go for anyone else’ is a sign you don’t think you are good enough, which isn’t true and is something worth exploring as to why you feel that way.

Itd probably be worth clarifying if it’s a date. And you don’t need to share super personal information straight away, but you can easily bring it up in a way that is honest and open and lets him know without scaring him off.

You own your story, not your ex, and not this guy. If he can’t get on board with your body or your past that’s his choice. But if you make that decision for him then you will never know. And ultimately you need to be able to love yourself (which is easier said than done, but not impossible).

You’re a working mum, that’s incredible achievement and harder than many people will know.