Is that because you are feeling hurt right now, or was that always the case? Perhaps you could come up with what you can say to him and let him know that phrase means you are at a "I need intervention" stage.

I use a phrase when I'm close to dissociating. I didn't know I used it, but I always do... so T now knows that if I say that phrase, I've reached a critical point and if we don't change the subject, and I need her to change the subject to reground me, then I'll go.. I'll be gone for a bit.

Is there something other than please help me.. or I'm really there.. that passes through your head repeatedly when you are at that place?