Not really.
Chocolate contains phenethylamine, which is a precursor chemical to the neurotransmitters adrenaline, noradrenaline and dopamine. But not only is it rather weak in potency as a neurotransmitter in its own right, it doesn't get past the blood-brain barrier, and is destroyed in the bloodstream after about 5 minutes.
Furthermore, 'love' is feelings regulated by endorphins (natural opiates), endocannibonoids, oxytocin, dopamine, and serotonin, mainly. Chocolate contains none of these, and even if it did, again, they'd be mostly destroyed in the blood stream before they reached the brain.
Unless you're taking a strong MAOI, the most you could work with is this: http://en.wikipedia.org/wiki/Chocolate#Aphrodisiac