AshleyMadison.com is the place to go if your looking for an easy extramarital affair. It’s a hookup site for married people. What a nice idea, huh? So AshleyMadison.com has now offered Katie Holmes a free lifetime membership. After all, Katie Holmes is married to that little twerp Tom Cruise, she must need some help in the bedroom, right? TMZ.com reports that AshleyMadison.com, an online dating service for married people, has offered the third Mrs. Cruise a free lifetime membership — so she can seek out a “meaningful relationship” and “fill her lonely bed.” Sometimes, a gal needs more than a…