Hello Depressed Fiance. I am so sorry that you are in this painful situation. I have a couple of comments and a couple of questions for you.

Unlocking someone else's phone without their permission is a violation of their boundaries and not okay. It is still not okay to violate someone's boundaries even if you feel they crossed a line...that's like saying "2 wrongs make a right" if you know what I mean.

With regard to the "sexting," had you and your fiance discussed your views on cheating guidelines for your relationship....does it include sexting? For some, that is cheating. For some, not. I think cheating needs to be defined by the couple...an agreement on both sides ahead of time...what is "okay" and what is "off limits."

For example, some women believe that if their male partner views pornography in his own time, he is committing an act of infidelity. Some women do not perceive it that way and simply view it as a sexual release for their partner in between sexual acts they share as a couple. There is no "right" or "wrong" as such provided both partners agree on the guidelines and nobody is being hurt or abused. If cheating guidelines were not discussed ahead of time, then things need to be directly discussed as they arise.

I think I am noting some ambivalence from you about the end of the relationship. Do I have that right? What do you feel you need at this point? Would you like to have some more dialogue with your gf regardless of whether the goal is to reunite or not? Sometimes people just want to have their thoughts heard even if the relationship will end anyway.

Or perhaps you would like a neutral 3rd party to listen to your concerns? Such as an experienced couples therapist. That could be really valuable if you are open to it.

I wish you peace and positive energy regardless of what you decide. Good luck.