I've recently started a new save file and for the first time I realized how attractive Hadvar is...aha.

I'm thinking, maybe, Hadvar and the DB can reunite a few months after the civil war is over at the market stalls or something and reminisce over Helgen and their days capturing forts together. Perhaps Hadvar has been harboring feelings for the DB as time progressed but never had the courage to tell her.

I don't know, honestly. Do whatever you'd like! I just want to see some passionate loving from Hadvar.