WHAT IS LOVE????

i have no idea anymore.....i thought love would be one gurl for one guy forever n ever......but apparently thats not true....so...love starts with an attraction...a spark....but is it possible to be attracted to more than one guy???what if u r attracted to a guy even when ur in a relationship with someone else????or what if u get a spark with a guy after ur married????is LOVE fate/destiny or juz depends on how much u can tolerate n give in with ur partner.....how will u know if he is the ONE??!!!