So when I calley partner out about the sexual activity outside of the relationship that my partner had been engaging in I was met with "it's not cheating I have never had sexual intercourse with anyone but you in our almost 10yr relationship." Yet one of my partners ex's sent multiple screenshots that indicated they were meeting. Now my partner says the ex is a liar and they neveret. Well during my quest for truth another person's name came up so I contacted that person and that person, whom would have no alterative motive (what may partner said was whey their ex was making things up) confirmed they did in fact have sexual intercourse with my partner. Now mind you that I provided all previous evidence to my partner asking that based on what I was seeing would my partner actually believe the same things they were telling me. I have yet to be provided any response to that almost a month later. Almost feels like my partner just shoved it under the rug and is hoping I do as well. However, the I have never had sexual intercourse is now a proven bold face lie as is I never cheated on you. So I'm sitting here lost in my thoughts trying to grasp some compression as to why continue to lie even after being caught and why continue to be with someone who it has become more than apparent you are unable to be either faithful and loyal to let alone engage in the very basic truthfulness required to sustain a long term relationship.