Actually I do this too occasionally. Sometimes I think of her with someone else, like her best friend in H.S., one of my old G.F.'s, or Alyssa Milano. She does the same thing.
I think so and I really don't see anything wrong with it...come on admit some days you are not in the mood but want to please your partner...so you might need a little help getting hot....this is true after yrs of marriage