I totally agree with Emma (so much so I had to join the website as I was not a member!) The thing is we are drawn to people for a reason and if you are drawn to him hang in there, I am not advocating doing something about it but obviously there is a reason for it for all of you and if you walk away you may just find yourself in the same situation. It is for him to worry about his relationship and it may be that it is not meant to be, as long as your conscience is clear I would just stay put and see what develops. Believe me your situation is much easier than my unrequited love! And I also agree with Sojourner, communication is very important although very difficult but it may help especially if he denies any feelings or goes cold on you – then you have your answer!