Margot Robbie answered 13 of IMDB's questions in an interview that highlighted her experience on set as well as her take on Harley Quinn in the Suicide Squad movie.
How wild are the scenes between Harley and the Joker? How would you characterize them?
Pretty wild. Crazy. I've never seen scenes like it before, personally. It's next level. People better brace themselves. It's weird. They're a fascinating couple. Honestly, I find their stuff the most exciting out of everything. I'd watch a dialogue scene between them over, like, buildings blowing up and guns, which I love as well. But when they are just together or when they find someone that they wanna pick on, it's scary. Yeah, they're messed up.
Read more from the interview here.