trust
trʌst/Submit
noun
1.
firm belief in the reliability, truth, or ability of someone or something.
"relations have to be built on trust"
synonyms:confidence, belief, faith, freedom from suspicion/doubt, sureness, certainty, certitude, assurance, conviction, credence, reliance
"a relationship built on mutual trust and respect"
I did some extensive study on trust, it is a really good subject. It has a ripple effect that is amazing. It is also an exponential multiplier of pain when broken. Trust is given, it's a gift and a responsibility.
Exactly - and when the trust you have placed freely, trustingly and wholeheartedly into someones hands is not nurtured or for that matter disgarded and not even 'placed' aside - but rather tossed in the trash... because of another individual - psycologically ... what do you do with that🤔
Look at it as a life lesson and move on.
And if said trust was placed in your significant others hands...? would you honestly be able to say the same? Keeping in mind that we are not referring to broken vase here ...
Yes, dwelling on it will not help and not learning from it would be a waste.
Trust is not a constant, it changes with every bit of data. Learning the levels of trust is an everyday thing. If a significant other loses some trust it is really no different than anyone else, except the intensity of the trust is usually greater.
What would be your other options?
Not knowing the information I have embedded in my mind would be awesome - although I know not an option....The pain of the deceit NOT be there... again not an option. Me not having to relive the sordid details in my mind...not an option - So NO - NO options ...
Many of these non-options are actually choices. If your perspective is painful, change it. If these views are serving you in some way, then accept them for what they are.
My heart is broken
Nothing is right. 
Nothing is fair
Nothing is helping
Nothing is going well
