The actress-turned-singer likes nothing more than falling  head-over-heels for someone, even though she admits she is a "cautious"  partner. 
The 23-year-old beauty's recent track with Robin Thicke begins,  "Is there somebody who stillbelieves in love?" which, she admits, she  does. 
She explained: "I love love. I f**king love love. What's weird  is that, from a certain point of view, that song could be about someone  who's jaded, but it could also be someone who has every hope in the  world. I think that I'm a little bit of both. I'm very cautious, but I  still throw my heart into it." 
However, the 'Gossip Girl' star - who is dating her TV co-star  Sebastian Stan - doesn't want anyone to take her song lyrics literally. 
She explained to Britain's InStyle magazine: "I would never want  anybody to associate my lyrics with how I am at this moment, because I  draw from experiences that aren't necessarily current. I love to say I  live in the moment, but I have a past." 
Leighton is also not ashamed to admit she can be quite a  "selfish, insensitive" lover. 
She explained: "I can be selfish sometimes, that's one of my  flaws. In love I am selfish, insensitive, but I think love is  complicated, more complicated than I'd like it to be. But maybe I'm just  complicated."