Finding true love is only half the battle. For Mark and Sam, love and commitment came easily. Holding onto it won't be as simple. Mark Peterson is still deeply in love with Sam, his partner of 15 years. He's perfectly happy with their relationship, even if their sex life has grown a little stale. When he begins to notice Sam's gaze wandering toward other men, he fears that his younger lover may be losing interest in him. When Sam suddenly suggests they broaden their sexual horizons by inviting a third man into their bedroom, Mark reluctantly agrees. Together, they answer an online ad for a man who seems to be just what they're looking for - handsome, hung, and only interested in a little no strings attached fun. It isn't until after the excitement begins that they find out they've made a terrible mistake.