Why would a guy say on the phone “if you hook up or kiss a guy I want you to be honest with me” when I told him I got invited to a guy’s party?

It was a guy friend party that i got invited to but why did this guy friend respond like this? Then he says “im going to let you go now because i might say stupid things” what stupid things?

Why would a guy say on the phone “if you hook up or kiss a guy I want you to be honest with me” when I told him I got invited to a guy’s party?
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