Truthfully why would a guy have loads of girl “friends”?

My boyfriend has so many girl mates. His closest friend is a girl and he has loads of other girls that he’s very close with. They’ll message all the time and go out on one on one meals and for drinks and to the cinema and things- all which I’d consider date like activities. Does his desire to make loads of girl friends just mean he fancies them all or did at one point should I consider it as a threat? Because it’s making me feel sour about the whole relationship.
Truthfully why would a guy have loads of girl “friends”?
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