Romance, Love
Again and again, your heart comes back to the same person. Is this romance? Are you in love?
Perhaps you have a person in mind that your heart comes back to again and again. Associate that person with this notion and kanji, and this'll be easy to memorize!
れん
こい
None
But, remember that your romance isn’t a rental (れん). You really wanna reserve it for the right person!
Don’t let your love become a rental. Wait for the right person to come around.