Most guys are not kind enough to call your or come over to your house to tell you that they’re no longer interested in you. They figure that you’ll figure it out soon enough, and if they were to tell you in person you might yell at them or start crying. Most men have no interest in either of those scenarios.
He could be busy, but unless his land line phone is dead, his cell phone is dead, his computer is dead, his work phone is dead, his friend’s phone is dead, or he broke his fingers or his mouth, and he doesn’t have a car or a bike or enough money to take the tube and the bus to your house to let you know that he’s busy and to tell you when you can re-connect, then consider yourself dumped.
If he was actually dead, it is likely that you would have heard about it from someone by now.
Did you try calling him? Playing shy is not going to help in this situation. If you really want/need to know, then call him and ask him, directly.