I reset my Dawnguard DLC. I've played Dawnguard against vampires and when I was finished with the main quest, I downloaded the Serana marriage mod from nexus and married her, but I decided on give Dawnguard another run.
So I turned it off and made a new save. I drop the ring of matrimony and everything that could connected me to Serana and this time I sided with the vampires. But when I finished the main quest and told Valerica she could return to the castle, which she did, I put the amulet of Mara on and tried to propose to Serana again. However, this time after the first question (if she had something on her mind), nothing more appeared. There was just one small message in the left corner stating that Serana is available for proposal.
I can't marry her or anyone else in Skyrim because the real question (if they're interested in me) never appears.
I already tried some console codes to try go around this situation and nothing. I downloaded a new mod for Serana and still nothing. I turned off/on the marriage mod and still nothing. I played Skyrim for a while now and it's not the first time I try and marry someone, but this once it's killing me. Why can I not marry her? How can I fix this?