Thoughts: Friends and their Lovers

What is this sick obsession my friends have about making me talk to their lovers/wives? It happened again the other night. Here I am pouring my heart out to an old friend on the telephone and he keeps saying "Why don't you talk to my wife about that? She knows all about that." But I didn't call his wife, I called him. I'm pretty much a one-on-one sorta person and I'm not accustomed to talking to multiple people at once. So despite my lack of interest I find the wives voice interloping on the phone and I do what comes naturally to me: I flirt with her outrageously. She get's very embarrassed and gives up trying to speak with me.
This is not an isolated incident. It has occurred many times with many people and it continues to occur. Why do people try to force their relationship onto me? It's their relationship and I'm really not interested. I imagine it has something to do with trying to share the love that they are a part of, trying to integrate me with their loving new community. Except it doesn't work. Ever. I just end up feeling more than ever that I have lost another friend and I will never get them back until I, too, have a "meaningful relationship" that I can share with them.
It's either very selfish of them, or else it's very well-intentioned and totally Naive to think they can add someone into my life because they are in a relationship with them. It's no secret that I am very picky about the people I associate with. And I always try to treat people as individuals, judging each person on a one-on-one basis. Sure, I respect my friends enough to trust their judgement and respect their lovers, but as I survey the long list of people I know.... none of them are ex-lovers of friends, and very few are ex-lovers of mine.
And so we come again to one of the overarching lessons about this phase of my life: People pair off. Then they try to get you to pair off, or become a part of their pair, because they cannot conceive of any other way to have you in their new "pair life." They bond together to create not two people together, but one person in two bodies. In the most extreme example of this, one of my oldest friends, invited me to play erotically with his lover and she was fine with it too. But I didn't, i couldn't. How could I? I am me and they are "Them." I miss my friends who are in long standing relationships. May they rest in peace.