This one absolutely depends on your new bf and where you think the relationship is going. If it was me I wouldn't be comfortable with you being any where near an ex unless children were involved. So first, is this guy a keeper or just for fun. If he's a keeper then you need to find out his feelings on this and respect them. Ultimately the consideration is how much you are willing to risk your present and future for the sake of the past.
I see ? do you think that his ability to make female friends makes you view him as more competent and as a result more attractive?
This one absolutely depends on your new bf and where you think the relationship is going. If it was me I wouldn't be comfortable with you being any where near an ex unless children were involved. So first, is this guy a keeper or just for fun. If he's a keeper then you need to find out his feelings on this and respect them. Ultimately the consideration is how much you are willing to risk your present and future for the sake of the past.