Can you Fall in Love with another person while still in an Active relationship?

@incus99 (1086)
June 29, 2010 11:01pm CST
I had a first hand experience with this with my wife.. we were both committed to our girlfriend / boyfriend when we met each other.. It was like a whirlwind love affair.. we pursued the relationship and got happily married with each other.. this brings me to the question that .. Is it possible for the heart to fall in love again while being occupied by another person? If you fall in love more than once or twice in an occasion, is it really falling in love or mere infatuation? Is there a real limit to the number of times that you fall in love?