[Nikkkkki]

The names used are not real.

This is quite a long and complicated situation so i'll try to make sense.
I have two friends who are dating eachother. One of them, i"ll call them Sam, has been my friend for a few years. There was a point where we had a crush on eachother, but that has very much passed. The other one, I'll call them Alex, i met because Sam was dating them. We have known each other for a few months and have gotten pretty close. Here comes my problem. Sam is very jealous that i hang out with Alex often, they refuses to speak to them if we are hanging out and are mad at Alex. It makes Alex very very upset. I do think they are quite toxic for eachother. Sam thinks Alex will leave them for me and doesnt let them hang out with anyone. The problem is Sam is on vacation for a month and knows very well that i have no other friends.
I am very scared that Sam will make me choose between them and Alex and i wont know what to do. Anyone have any advice?