"love interest : Especially of a character in film or literature: one who is of interest as a..."

“love interest : Especially of a character in film or literature: one who is of interest as a (potential) partner in love.
A romantic relationship; a romance.
(film, literature, specifically) A romantic plot or subplot in a film or book.
Happy Valentine’s Day from all of us at the Wiktionary!”

- https://en.wiktionary.org/wiki/love_interest#English

via Tumblr http://bit.ly/2Ic8jrW