I liked to be choked during intimacy but what should I do if he went to far?

[nrsechica]

I am dating a really amazing guy and we get along so well and have many things in common. I always have been turned on by being choked, but it was always lightly never anything to hard. If this offends anyone please stop reading this now. He who was doing it a bit harder but it did not hurt. The last time we were intimate he was doing it but he was putting a bit more pressure and I felt like I was going to pass out soon. I told him to stop and put my hands and tried pulling them off and he did not do stop it until the third time I tried pulling his hands off. I told him I was scared. He than said I don't want you to be scared, you are going to feel some kind of euphoria and it is an amazing feeling. And he said that it is okay and if I want to ever go to that extent let him know. So, I guess the fact that he would not let go right away scared me. I kind of want to try it but I know the risks you can take. I guess he just wanted me to experience that but if I am literally pulling my hands off and does not let go for the third time, I am wondering what his deal is.