Thanks for the help Glinda..
I agree with you that Marcus has to stop himself before he runs off that proverbial cliff!
I hope (but have my doubts) that he can 'get a life' and stop his obsession.
I guess obsession is an addiction too - with an alcoholic it's simple, give him all the booze he can drink and tell him to stop committing suicide in pieces. But, what do you tell someone who does not want to listen, and just wants to be heard?
MARCUS - We cannot spank her and tell to drop everything she's doing in her life just because you want her to. We cannot tell her to lie to you, to tell you that you are more important to her than life. She is grown up individual and she will go her way, unconcerned of how you feel about it. So, please stop making another person the center of your universe and work on being a strong individual instead of a whining kid.

You need a new perspective in life.