It will be impossible to really know until you talk to him about it. And there is really no way to know what was in his mind when he said it. I know it genuinely feels like he knowingly said something despite being aware of your difficulty with rejection, but consider this: If he is very accepting of you and has absolutely no feeling inside of him that is rejection of you, then it would be difficult for him to just guess that his statement would feel like rejection to you. Does that make sense? I don't know if you've heard of it before, but what you're experiencing right now is called a therapeutic rupture.

I would really encourage you to talk to him about it. I've had lots of ruptures happen over the years with my therapist, and when I've finally talked to her about things, amazing things have happened. Along the way, I read something about the "repair" of these ruptures is truly one of the most healing things. Ruptures are often caused by things from our earliest relationships that weren't good, and a therapist actively pursuing repair of a rupture in the relationship can go a long way toward lessening the impact of the past. It has been extraordinarily healing for me.