So I took my sim Madison from Riverview into the Future. There she met Drake. They hit it off, and eventually held a small, private wedding. The thing is, he never moved in. The box never came up to add him to the household, and his avatar isn't there either. She is showing as married, and he is in her relationships as her husband. They have also engineered a baby together since.
In the end I took her back to the present with the baby and the rest of the household hoping he would show up, but he hasn't, even though he's still listed as her husband in her relationships.
I want her to be married to Drake! (And if he never shows up, how would she divorce him anyway?)
No mods in the game, I had to take them all out to get the bot emporium register to work.