MMF..my best friend says he's down for ANYTHING! What does this means??

Sounds like he is open to having sex with you, if you are open to his pelvis in your face, just go for it. If not just let him know what you are comfortable with. Amazing how conversations can clear up so much confusion. Play safe...

 

this....

 

The question isn't whether its normal; the question is whether you know yourself well enough to know whether you are interested and okay with (or not) the possibility of sexual contact with your male friend AND whether you can communicate with him about your interests and boundaries during these threesomes.

That said, it does sound like he might be interested in some sexual contact with you. So I strongly encourage you to talk to him before the next threesome and discuss what you want and what your boundaries are, and what he wants and his boundaries are. Even if the answers are that each of you aren't entirely sure but are willing (or unwilling) to try. If you two can't be direct with each other about these things, it might be a good idea to put threesomes with this guy on hold until you can.

It also sounds like you have some concern about his insistence on drinking rum during these encounters. And that's a valid concern. One strong drink to relax the nerves is okay, but more than that can start to impair people's ability to give full consent. So I think your concern is valid. He might be using it to relax, or he might be using it to try to get you to do things you aren't comfortable with. If it's the latter, that is pretty creepy. If you don't want to drink rum, don't let him pressure you into it, and in any case, don't drink so much that you are drunk.

Are you interested? Do you want to have sexual contact with your friend? Either way is okay.