Why do I feel like I'm not the same person depending on who I'm with?

I have noticed this so many times, the pattern is when I'm sitting with my guy friends I'm much more silent and kinda closed off than when I am around girls, I really don't understand what it is.

Around girls whether they're friends or strangers I just pull off a 180 and become bold and loud and funny and almost borderline cocky as much as possible, like instantly I don't even think it, I take no shite, no fucks given a lot of fun received, when I'm with dudes and only dudes it's like I just feel different, more uncomfortable more waiting for who's gonna insult me and what comeback can I come up with, it's brutal I don't understand it though, I just came back from McDonald's with guy friends and I was so anxious and uncomfortable all the time, like I was happy when the food came because that meant no one would be talking and I was anxious to talk.

I also hate hate when they ask me about girls I'm talking to I just lie it's my private life, has anyone had a similar experience to this or has any insight on it?

Why do I feel like I'm not the same person depending on who I'm with?
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