Sadie physical intimacy is THE only thing they have going for them.. He gets to have sex with her once a month without any strings. I'd imagine there is quite a lot of physical intimacy when they are actually together.
OP: You need to listen to Ciara because the by what you've described that is exactly what is happening here. if he is in a polyamourous relationship with his primary partner that is not long distance, then tell him you want to speak with her so that you get to know her when you move there to make sure all three of you are compatible. If he refuses to introduce you or let you speak to her then you are just his "dirty little secret."
I suggest you do this soon so that you know the true score. Don't let him be 100% in control of this dynamic. You deserve to be involved other than with your vagina on a part time basis. He will not be giving up the girl he spends all his weekends with. You need to know her and she should at least know OF you by this time.
Last edited by Wakeup; 09-06-11 at 01:01 AM.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion