What does it mean when a guy has a lot of female friends?

I've known this guy for a year and he's a total gentleman with me. He's super nice and sweet. He doesn't have a girlfriend but I've noticed how the majority of friends he has are females. What does this mean?
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He's not gay for sure. He's got pretty masculine interests like Football etc. and he's not extremely well groomed or anything. He does have male friends but they are less than his female friends.
What does it mean when a guy has a lot of female friends?
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