normal? idk. but is it something I would advise you to do? no. there are feelings involved with getting naked. so if you are asking US for help with your feelings about an activity that hasn't even happened yet, then you and your friend are not (yet) very good partners in sharing your feelings for the activities you are ALREADY doing, which is just TALKING.

What i'm saying is, he is trying to tell you it's normal; you suspect it's b.s. but you're afraid to say so? walk away from this loser before there are naked photos of you all over the internet.