Sounds like she's looking forward to seeing you but wants to make sure she doesn't give you the wrong impression of why she's coming so things don't get serious. And you don't need luck, you know what to do -- keep things light, validate, and let her lead. You got this!
Also, if things were going really well w/ OM I don't think she'd be spending her Fri night w/ you. So why stress about it?
Have fun and enjoy the movie.
BD: Aug 2012 Separated since May 2013 S born Aug 2013 Aug 2013 H agrees to consider 'baby steps toward working things out' H is/was actively seeing someone?