I think anyone who has been in a live-in relationship has at one point or another felt like they were being smothered. It is easy to feel that all of the benefits of having someone to share their lives with are overshadowed by the specter of someone monopolizing every moment of time not spent at work. This can often lead to resentment, boredom, and a serious lack of desire in the bedroom. I must admit, I have been guilty of this in the past. And, it has cost me some relationships. But, I eventually learned.