Is it normal for me to be married and fantasize all hot girls?

OK, so I'm 28 years old, I've been with the same female (who's now my wife) since I was 19. I tried to be all straight laced and all growing up (did some minor partying and drug experimentation). But as far as dating goes I was always very shy... Once I got the confidence to start dating I met my wife. The problem is I never got to go out to the clubs and "live it up", and never got the chance to be with other girls...so now it's driving me crazy and it's all I think about! Not to mention my wife is not very adventurous in bed, I can't remember the last time I got oral... (although I'm expected to 90% of the time) I'm altogether not all that happy, but yet don't want to go through the pains and trouble of divorce. I think I'm just in need of some strange. Is this Normal? Any advice?? (p.s. I'm an attractive guy with a great job, ...)