Really have any females friends until I was fourteen I was obnoxious and not in real school when I was in middle school. And I was pretty anti social in elementary school. Wonder if this messed me up.
I don't think it messed you up, and if you're able to analyze this you're a lot further along than most people who are socially awkward (not saying you ARE, but you do have signs) so at best I wouldn't try to sweat this too much, it's just a contemplative moment you're having.
I've had friends who went to all boy prep schools for like 1-12th grade and they turned out okay
WAY TOO USE TO NUDE WALKING BUT THEYRE OKAY
Dude I have always had female friends. Hell my first best friend was a girl and sometimes I still don't know how to talk to women. So you will be fine.