You were accidentally teleport to another multiverse where yourself didn’t exist in this universe. Your existence was captured by Batman, he brings the visitor from another dimension of reality to his Batcave so he could asked a questions about your universe and why you’re here.

During all of that, you meet with his son, Damian Wayne or your boyfriend in your universe. But in this universe he doesn’t date you. You didn’t exist..at all.

"You claim that I am your lover in your universe?..that’s ridiculous" He commented immediately after listening to your story you were telling Batman, including how you are dating Damian Wayne in your universe too.