I have been married for 28 years, and I can tell you in all that time that I have learned that *its not always about you*. You are interpreting your boyfriends withdrawing from you emotionally to mean there is a problem with you and your relationship with him, but the most likely thing is that he is just dealing with his own grief in the best way he can. I think you are doing all the right things, getting counseling, seeing that he gets counseling and medication, but beyond that, I think you just need to disengage a bit from this emotionally yourself, give him the space he needs to heal right now, and don't stress yourself out by assuming the worst. Whenever I have had to go through stressful events in my life, I have always gotten a lot of relief from physical activity, so even simple things like riding your bike can help to keep your brain chemistry in check. I am sorry that you are going through this, but just try be calm, and only worry about your boyfriend leaving you if he says that is his intention.