I married Jordis. Lydia was glitched at the time and prevented marriage.
Jordis sucks. Marry Aela. Archer trainer and you can just get the gold back by raiding her inventory.
Aela's heart will never truly be yours as she was in love with a dead companion. I forget which.
Though you could marry Mjoll, just to make Aerin a cuck. He'll like, just be in your house, watching you and your wife sleep. It would have been less funny in my save because I play female characters, so I just married Jordis.