I don't see that you have seen anything that crosses your high-handed, controlling two-rule mandate? She has not cheated on you and she is not having an adventure? So she blocks and unblocks someone and YOU believe she is thinking of him (the software doesn't always work the way it is supposed to or is cumbersome with complicated arrangements and people can get inexplicably unblocked); you going to get the fantasy police to go into her head and try to make rules about what she can think about?

You cannot be happy if you have a problem and are trying to put it on her. You cannot control someone else! She gets to make her own decisions, think her own thoughts, whatever is best for her life and you are not letting her do that because you are cheating. You are reading her information and she does not know that. You are having an adventure (even if only in your own head and it's a darned uncomfortable one). Come clean with her, tell her what you have done, read, thought, and level the playing field and see if she thinks you are Mr. Nice Guy anymore and wants to be with you!