To those who were not (knowingly) cheated on physically --

To those who were not (knowingly) cheated on physically - do you believe/suspect in retrospect that your ex pwBPD DID cross boundaries that you simply weren't aware of? Or did you have the experience of not being cheated on physically, but were other lines crossed? IE emotional cheating, flirtation taken inappropriately far, etc? Cheating and boundary crossing behaviour seems very prominent in these forums and because mine did not (that I know of) physically cheat, I do wonder.