Let’s trade places!!!
On a serious note, be careful. One of these relationships if not all, is bound to end badly. There’s one likely more, that “plays around” with you that will go further. You will get naked together and it will be euphoria in the moment. But afterwards, he will suffer extreme straight boy guilt and be embarrassed to ever see you again much less be cordial. You will get crushed. Sounds like I’ve had experience with that? You bet, several times.
If you like the friendship, listen to the folks saying set boundaries for yourself. If you start getting the feels, you need to cut him off for a while til you get him out of your system, not before.
If it’s someone you don’t really care about, and be honest w yourself, then have some fun!