His grandma died and now he won't talk to me anymore. Since he's lost interest what should I do to keep him?

I had been dating this guy for six weeks and we were totally into each other. We hung out every weekend and he would call me at least once a day. And every time he told me he would call he did. I never felt like games were being played.

Now I am just confused. The weekend they put his grandmother in the hospital he started becoming very distant. I didn't let it bother me too much, but then she died a week later and that was the last time I heard from him.

That was two weeks ago. Since then I have tried not to bother him too much I have called or texted 4 times only in a two week period to show support and let him know I was thinking about him. But he has not responded to me at all. How should I take this? Has he given up and lost interest? Was I showing too much support? And what can I do to possibly sway him back my way in the future? I know six weeks isn't along time, but we were having fun and would like to continue to have fun in the future.
His grandma died and now he won't talk to me anymore. Since he's lost interest what should I do to keep him?
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