I’m sorry to have to tell you that you didn’t have a great relationship. You had a secret relationship with a married man. Different nationalities, religions, and ages can be bridged. But cheating cannot. He’s being unfair and dishonest with his wife every time he calls you or spends time with you. On your side, you’ve convinced yourself that having so little is a “great” relationship.
My guess is that having a heart attack made him question whether he is making the right decisions in his life. Being confronted with mortality has a way of doing that. It’s also possible that his wife found out what was going on while he was in the hospital and demanded that he make some more honorable choices. He is communicating with you. Deleting you from his Blackberry is deleting your from his life. Further, he is being as dishonorable with you as he was with his wife. He isn’t talking about the things that need to be talked about.
My best advice to you is to move on — even if he does call you. He’s not serious about making a life with you. You’ve already wasted three years of love and time on this guy. It’s more than enough. Grieve the relationship and move on.
I wish you well.