What do you love more...your partner or your chocolate? You may vow your undying love to your partner, but your brain? It wants the chocolate.

A recent study of 20-year-old couples found that when the lovebirds kissed, hearts pounded, knees weakened, and the kiss had a lingering effect on their brains. But when the same couples were given chocolate to melt on their tongues, heart rates jumped to up to 140 beats per minutes and the brain and body buzz lasted much longer than after the kiss. Not only that, while the kiss made some parts of the brain light up, the melting chocolate set off fireworks.

Maybe the volunteers were just kissing the wrong people? Not so, say experts, citing the fact that chocolate is full of phenylethylamine, which can boost endorphins in the brain, and caffeine, which is a stimulant. Then again, the volunteers were locking lips in a lab, which may have put a damper on their ardor. Now tell the truth, did this post have you craving a kiss from your sweetie...or a candy bar?