How long does Replay last?

[still hoping]

So today I find out that BIL (who supposedly hates OW) introduced OW as H's GF over 6 months ago to some mutual friends (who he maybe did not know knew me). Nice...

If anyone who has been on these boards for a long time is following my very scattered posts, have you ever seen such an awful situation? And is there ever ANY hope in a case like mine? Is my M worth holding on to? I know that every case is individual and that I'm backsliding with where I should be mentally - just really wondering if I should throw in the towel at this point and give up all hope. Obviously, I've been trying to do this, but in my heart, I still want the fairy tale ending - I want to be able to say 5 years down the road that we survived the worst of the worst and would love to be happily M to my H again. Would love an outsider's point of view.