I agree - love is much more than a physical attraction - it is the difference between being happy about making someone happy, and being made happy by someone. Lust is transitory and crude, satisfying our physical nature to procreate with the brightest feathers, smartest partner, flamboyant mate. Love is when we find someone who does more for us than just fill that need.
We, free citizens of the Great Republic, feel an honest pride in her greatness, her strength, her just and gentle government, her wide liberties, her honored name, her stainless history, her unbesmirched flag, her hands clean from oppression of the weak and from malicious conquest, her hospitable door that stands open to the hunted and the persecuted of all nations; we are proud of the judicious respect in which she is held by monarchies which hem her in on every side, and proudest of all of that loft patriotism which we inherited from our fathers, which we have kept pure, and which won our liberties in the beginning and has preserved them unto this day. While patriotism endures the Republic is safe, her greatness is secure, and against them the powers of the earth can not prevail." -- Mark Twain
Love and lust are used interchangeably now so most people believe lust is love and love is lust.
Education, as always, is the key. While love and lust are cousins, one is shallower than the other and too other peters out into *meh*.
Its simple, when you love someone you want to give to them because you think about them, when you lust you want to take from them because you are interested in your gratification not theirs.
If you want to know if its love then think of all the times you were down, sick or in need. Did the person you care about help you? Then its love, if not they're 'around' for a different reason.
It applies the other way around to. If you are interested in someone and care about when they are down, sick or in need then its love. If you are just about how they look or their popularity then its lust.
Disclaimer: Not a love guru or counselor, just experienced *wink*.
Lust can lead to love, and love can lead to lust. But they are not the same. Lust offers short term relationships while love offers long term relationships. There is a very big difference.
Maybe that poster meant that sometimes first you lust over someone and then after you get to know them you fall in love.