I believe the knee jerk reaction is to say,” no”.
However I believe it depends on the people involved.
One should only Trust someone who has demonstrated Honesty and Integrity.
If you sense you are being betrayed (and lied to) then you have two options.
1. Trust your instincts and walk away.
2. Seek out proof to prove you aren’t paranoid or insecure.
If you feel in your heart of hearts that something is” wrong” I suspect even if you learned your partner was NOT cheating you’d still be "unhappy" with your relationship. I wrote a hub about this notion of feeling unhappy in a relationship won’t change even if your mate is not cheating. Finding out someone is cheating just gives us the "Aha moment" as to why things have changed in our relationship but it's not the "real cause" or "motivation" for the change.
However I do understand those who insists on exposing those that lie and the need to confront them.
As the TV show “Cheaters” states: “Exercise your right to be informed”
In this day of Aids and numerous other stds having a partner who is having sex with multiple people may be putting your life at risk!
In order to trust someone they must be trustworthy.
In years gone by when there were doubts a loved one sought to offer reassurance.
Today they’re most likely to demean you or put you down if you caught them cheating.
“I lied to you because I didn’t want to hurt you!”
“If you trusted me, you wouldn’t have busted me!” lol
In the words of Ronald Reagan: “Trust, but verify”
I say; “If in doubt, walk out”
Life is too short to be playing private detective.