How do I tell my husband that I can't deal with him being friends with girls that aren't OUR friends?

Am I crazy to want him to NOT talk to girls that aren't a part of our everyday lives? "Friends back home" that won't stop texting him, and he's known her longer than me but it makes me uncomfortable that she feels the need to be in contact with him when he's been gone for over 3 years.

Is this a me problem? Do I need to get over it? I'm I just crazy insecure?

I don't talk to my guy friends from home, they're still friends but we don't talk, we respect each others current relationships to not make our SOs uncomfortable.

***EDIT: We have almost broken up (when we were dating) because one of his girl friends was getting in between us and he let her. She would text him at 2 in the morning when she KNEW we were in bed and he didn't see what she was doing (until she admitted she liked him and was waiting for is to breakup), ever since then I have been uncomfortable with girls, and he ignores my feelings about him hiding the fact that he's texting them. I don't trust the girls, and he won't tell them if they've crossed a line,

Like a random "im thinking of you text" is what set this off. ***