I got this idea from Everything to do with books, and I liked it so much, I decided to post here too!
This is what I think:
I am back and forth on them. If they are written well, then they can be awesome in a book, but I do not like the story to be all about the love triangle.
Books I really enjoy them in: Twilight, Iron King/daughter, Dead Tossed Waves (I am not finished but can't decide!!!).
Sometimes I just want ONE hot and drool worthy love interest though. Light of Asteria is a perfect example. They are completely devoted to one another and that is the love that I would really want to pull for!
What do YOU think??