NeonKaos
Custodian
That one is pretty much how my husband and I started out. I was fairly hesitant about the idea of being poly, and my husband kind of pushed me on it (which in itself is a red flag sort of thing to watch for, that everyone isn't quite on the same page). Things didn't turn out like he'd intended. After some time passed, the woman we were dating decided she wanted a romantic relationship with me only. She and I are still dating, and he's trying to figure things out now once he adapted to that new dynamic.
Sounds like you folks are a bit more realistic than others.