Well you seem like the type of guy who is in a hurt and depressed state, which isnt bad per se but youre also desperate to escape it or drive yourself further into it. And as youve pointed out you fall deeply for women quickly without taking care of yourself and managing your expectations/emotions.

I'm not sure of what circumstances brought on the divorce but it seems like you're just acting out rather than approaching this situation with humility, hope, consideration or with realistic boundaries and expectations.

Do you need any more reasons why FWB sounds like a bad idea?