Tried it a few times with the GF. Last time we put her vibe that has a curve to it in my ass and tried to hit that sweet spot. Couldnt get it or find it. The vibe felt good while she blew me but from what I have read if you can hit that spot its just amazing and I want to feel that. I dont care if its with her or alone. Tips? Advice? Things you have done to get it?