That's not always true; some MLCers do have legitimate trust issues that have nothing to do with their MLC. And the issue of trust is one that both spouses have to deal with when it comes to reconciliation.
In the post-BD panic, LBSes may push too hard in order to learn about the actions of their MLCers. Also, there are a couple of people here who have had affairs of their own.
There's been more than person here who has asked, "How do I get my MLCer to trust me again?" And my answer is the same as Chapman's: you can't make them trust you, you can only strive to be trustworthy and allow time to heal those wounds.
Me: 45, Her: 40. Married 16 1/2 years, together(-ish) 20.
Status: BD 8/25/09, she moved out 8/28/10. No talk of D.
Every day is another chance to get it right.
http://www.vachss.com/mission/behavior.html"Counting days won't buy us years" —Wings by HAERTS
"Forgiveness means giving up all hope for a better past." —Lily Tomlin
"When we commit to our lovers, we implicitly promise to forgive them. There is no other way we can live with someone for better or worse or until death do us part." —Dr. Frederic Luskin