I've been married to my husband for two years, but we've been together for seven and I'm pregnant with our first child. Between the two of us, he's monogomous and I've identified as polyamorous. With his blessing, I've had fwb and at one point I even had a boyfriend, but no one outside our little arrangement knew. My husband has only met a couple of the fwb I've had over the years.
About a month ago, a local man approached me online about being friends, but I had a feeling he wanted more. It shortly came out that he has two wives and an ex wife with 9 children between them (most of them aren't biologically his). We've started dating and we seem to click. He's kind, caring, and we work well together in bed. We haven't met each other's spouses yet.
My question is has anyone heard of an arrangement like this before? I would stay married and living with my husband and he with his wives, but we would still be in a long term relationship with each other. He wants to take me on trips and on dates and help out with the baby as much as my husband will allow (my husband hasn't raised any complaints about this yet, just concerns I'm going to get hurt) and he wants me to be friends with his wives and another parent to his kids. Am I crazy for even giving this a thought?
Eventually, I would have to come out to my family and friends and my only concern is that I don't want people thinking I'm just running around on my husband, because he's always been part of the discussion and I would never do anything he asked me not to, in regards to this.