http://www.pcgamer.com/date-your-weapons-in-dungeon-crawler-dating-sim-boyfriend-dungeon/

Boyfriend Dungeon is an isometric action game with procedurally generated dungeons and, crucially, swords you can romance. Part dungeon crawler and part dating sim, Canada-based developer Kitfox Games' "shack-and-slash" is built around personified, dateable weapons who players must woo in order to grow stronger and "plunder the 'dunj.'" 

In a limited sense, stopping to "capture the hearts of cuties to level them up" isn't entirely dissimilar to conventional party systems where, as you explore, you find new recruits trapped in a dungeon, add them to your party, level their skills, and try not to alienate them with your moral choices.