Anyone involved in nudist colonies?

I just found out my boyfriend of a year has a Twitter account. He said it's only for the news.. .
Well I looked at it and appears he is following 3 nudist colonies. It also seems he has 2 nudist colony people he follows.
I have not confronted him about it. Yet.
He is always saying how anti gay he is and doesn't want a mans cock near him. Well then why is he involved in nudist?
Are these people swingers? Orgies?
This secret life makes me wonder what else is he hiding. We are very close I don't get this.
Can anyone elaborate on nudist colonies?
I'm hurt and feel betrayed.
Anyone involved in nudist colonies?
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