I love games with dating sims. Love them. The Agarest Wars are a good example. Okay story, bad gameplay (for me), but great characters and ROMANCE OPTIONS. I love the games for it. I don't know why, apparently I like to play matchmaker.

Let's see some games with romance options that I like:
Hakuouki
Princess Debut
Harvest Moon and Rune Factory games
The Sims?
Tomodachi Life, kind of
Agarest War series
Fire Emblem: Awakening
Dragon Quest V

I wish more RPG's had romance options. It's a pretty sure way to get me interested in a game