Throughout our marriage, even right up to the end, we were always together. There were no changes in his usual pattern, and I never found anything suspicious when I looked through his phone. We had sex everyday (yes, everyday), even right up to the end.
I'll spare you all the details, but things really changed in August after our last HUGE blow up when I essentially dared him to divorce me during our rage. He literally was on his way out the door for real, but I convinced him to stay. We had been fighting a lot for a few weeks leading up to that event, so we were both at our wits end. I was having a medical issue that required me to be on a LOT of hormones and I was literally a crazy person at the time. I know I wouldn't have said or done the things I did if it weren't for the hormones.
But he's very dismissive of me and my feelings, always has been, said "hormones don't have that much of an impact," which of course only added to my anger.
He's also a very cold, stoic, emotionally-void human being. Always has been. And I'm literally the opposite. He never understood me, and was instead very critical of me because of it.
Anyway, after he moved out, I've asked him twice if there's someone else, and he denied it. And the way he denied it wasn't indicative of someone who's lying.
I've also spoken to mutual friends, people he's close to, and he's denied there being someone else too, and they said he didn't give off any vibes or indication otherwise.
I know it's still a possibility, though. One can never really know. It just isn't like him, so it's really really hard to come to terms with that....