Breaking up is hard to do.

But what’s harder?

“When you don’t know you’re breaking up!” Lindsay Lohan says on Thursday’s Ellen DeGeneres Show. “Really weird.”

Asked if she knew she and Samantha Ronson were splitting after a tumultuous fight April 4, Lohan said, “I had no idea what was going on. I just hadn’t seen her in, like, a week. She, like, disappeared.”

See what a body language…