[lincpimp]

Being nice and understanding will only lead this guy on. You might want to discuss this with her and point this out. He is obviously obsessed with her, does she know what that will lead to? She may find it flattering to have all of his attention, but what happens when she gets tired of it? After letting this go on for a while, telling him to quit will not work. This kind of BS has to be taken care of quickly and decisively.

Plus you can let her know that you find the entire situation unacceptable and that it directly conflicts with your belief system of how a relationship is conducted. Put your foot down, you do wear the pants, remember! No need to be mean, or nasty, just make sure you are firm and stick to your principles.

And if she does not want to do anything, you may want to consider finding someone else. It is obvious what your "friend" is trying to do. This guy really sounds desperate, maybe there is something wrong with him mentally? You might try having him committed, if only for analysis!