Kind of - it was after *very* briefly considering a one-night stand that I was convinced I had to leave the first time (June 2011). I had suffered through a LT partner cheating and I didn't want anyone to suffer, I thought by leaving it would be "better".
The thought came to 'be' by wondering if our SSM was because of me or us...Wondering if I would be able to be intimate with someone else? Did I not want s_x at all or just not with my H? And it was just a thought, never acted upon in any way, shape or form - to my knowledge, the OM wasn't even aware of my "contemplation".
I ended up deciding to stay because H made promises to be 'better' and we both recommitted to each other, intimacy & communication. We had an amazing summer, full of time together and LOTS of intimacy. Something happened, more of our vicious cycle, come fall and it all fell to pieces.
