Why can't you get rid of this other guy? Maybe you are trying to have the best of all worlds. Unfortunately, this is not going to work out long term and you will have to decide whether you want to chase passion for the rest of your life or work toward contentment in a loving relationship.

Passion is one of those things where the grass is always greener on the other side. People are always searching for passion--and when they get it, they lose it and see it somewhere else. I don't think this is healthy.