Dear Loveangel,
I recently concluded a thesis-like project that i made at my own pleasure regarding lust and love. Lust and love are polls apart. Its at the extreme ends of the horizon. A good but crude way to differentiate love and lust is via this quip
LOVE: When sex is called "making love".
LUST: When sex is called "doing it".There are different emotional and physiological components to both love and lust. Romantic attraction and feelings of love for someone elevates our dopamine and serotonin levels, which causes feelings of elation and loss of appetite. When we get to the point of feeling attachment and a more long-term phase of love, our bodies generate more oxytocin (known as the "hormone of love").
Lust, sex drive and an increasing appetite for sex is generated by increased testosterone levels in both men and women. Heightened levels of testosterone inspire a feeling of focused attention and sexual arousal and because men are more inclined to have one-night stands and women tend to connect love and sex to a greater degree, we men are confused between women' needs and wants. Women connect sex with romance and intimacy while men focus more on body parts and functioning.

What's interesting is that men tend to consider sex a more intimate act than women do. From an evolutionary standpoint, this makes sense because women are actually giving men a gift during copulation alas the opportunity to spread his seed. It is also easier for women to find sexual partners.
Lust gets a bad reputation as one of the seven sins but when love and lust exist in the same relationship, life can be very sweet. The girl who makes your heart skip a beat can also gives you a hard on

and thus, what more can anyone ask for? Couples without a bit of erotic appetite in their connection end up as friends and not lovers.

Love can look a good bit like lust. Both emotions are pretty intense. Still, it can be confusing and painful to mistake one emotion for the other.

Cheers
>Taken from Taufiq's
Theory of Romance<