Previously Married Virgin

A middle-aged man and woman meet, fall in love, and decide to get married.
Settling into the bridal suite at their hotel on their wedding night, the
bride turns to her groom and tells him, "Please be gentle with me, I am 
still a virgin."

The startled groom replied, "How can that be?  You've been married three
times!"

The bride responds, "Well, you see, it happened this way.  My first husband
was a psychiatrist and all he ever wanted to do was talk about it.  My 
second husband was an astronomer and all he ever wanted to do was look at 
it."

Catching her breath, she then added, "And my third husband was a stamp 
collector and all he ever wanted to do was ... Oh God, how I miss him so 
much!!"