can't switch feelings off and on and everyone gets over things in their own time.

I've had guys say and do things that an ex has done and yes it can jarr and may you question if things are going down the same path.

Again - you have a theory, if you're not that fussed about her since you're talking about boning blondie stop wasting this one's time. She may be confused about this shit just as much as you are

Sort it out.