Asphyxophilia is certainly something that I have heard of before, and have known a few people who practiced it carefully.

Heres the deal, for most people who need this kind of extreme sex play there is soemthing deeper going on within themselves..Not that it is a bad thing, but people who practice this do have similarities.

Perhaps you should sit down with your man and ask him if he is willing to learn how to this safely, and in a way that you like as well..Everyone has fetishes..But the truth is that there have been people who died because of these types of extreme fetishes. I am almost positive that he is fearful of doing something wrong, so you need to make sure somehow that he knows it can be safe.

It may also be beneficial for you to learn others ways of excitment to get you over the edge.