chemistry is never taken for granted. where do you think all relationship problems come from??? lack of chemistry!! if two people are still together, you assume there is chemsitry???? that could not further from teh truth....my grandparetns have been togheter for 50 years, and i see no chemistry between...not even one tiny spark..maybe the spark existed when tehy eight kids one after another...but hey that was past! rsearch has proven that the first intense mometns between a man and woman gradually tneds to fade away as they get into the relationship. but hopefully what remains is love, trust and loyalty.