Wow, guess everyone is a little different. Although I don't have first hand images or videos, the sex aspect really doesn't bother me that much. Although we were very conservative throughout our 20 year relationship (11 year marriage) towards the end we got very "liberal" with our sex life.
For ME, the emotional attachment of my W to OM is a hard pill to swallow, but the BIGGEST hurdle for me to over come is the sheer destruction to our family. And the wedges just keep getting deeper and deeper. My family has been torn apart physically, financially, and emotionally. Also, me and step son 25 had a falling out. Him and his wife used to live with me, and were my wife's "moles". I fear the relationship with my ss has been obliterated. This of course has put a strain on D16s relationship with SS25 and his wife. And of course there is the strain between D16 and her mom. We went from a loving open family to almost sheer destruction in a month. Now everyone is picking sides when I have tried to tell the kids (especially the older ones) to step back and take a neutral position in this.
What a mess. For me, THAT is the part I do not believe I will ever come to terms with.
-EDIT for clarification- You might be wondering why on earth would anyone take an MLCer side...Well SS25 blames me for his mom's premature departure because although he knew what was going on, I gave her an ultimatum. He feels robbed of time with his mom and step sister because he thinks I "pushed" her out the door. He had his first child one month prior to his mom's departure. Second thing is, things were not working out in our living arrangements. I asked him to find his own place. He thinks the reason I "kicked him out" is because his mom wanted a divorce. Not true-was a stressful household, but he doesn't see it that way. And lastly, I love him to death...he is a VERY SMART individual, BUT...he is very naive, sheltered, and hate to say it but a "momma's boy", and well, our MLCer is his real mom.
-Terrified