ISAAC.
He had two, actually. If you think him living with a girlfriend is weird, try wrapping your head around the fact that he was in a poly-relationship (that's what they called it, anyway) with two women. They were both really sweet girls and everything and I had to give him hella props, but it was still a lot to absorb.
You'll get used to it. It took the other two a little while to get used to having me around again, too. No offense taken, I promise.