Is it normal to feel this way about other girls?

Its simple: your a jealous bitch. In order to stop being a jealous bitch you need confidence. I gain confidence by winking at old ladies at wal mart or by doing coke and getting lap dances I cant afford... by the old ladies.

No you need to get over yourself. He cant change what he did when he wasnt with you.

you need to start sucking more penis and stop whining

you're young. this part of your life is the most self concious part of your entire life, it gets better. just remember that you are worth a lot more than your looks. there will always be a prettier girl, don't let it get you down if, for instance,you're with your man and he happens to notice a very pretty girl. (unless he is a total sleaze that would try to get with them right in front of you). your value is your inside. your personality, your friendship with him (if u can't be friends first, u have nothing). when you have fun hanging out, just like with your gfs. that entire package isn't what he could get frpm some bimbo. once u realize this, you won't have to worry.

I love virgins. Their way nicer.

You shouldn't get jealous. Talking doesn't always mean flirting. And there's no reason to be jealous of his exes, because most likely they're exes for a reason.