I implore you to read some books, see a consoler, reflect on yourself, develop real 180s (what did you do a lot of, what should you do to be a compassionate loving partner), and do things that make you happy.
Sandi's Rules... You have to act like you have had an awakening. Do not reason, implore, beg, justify...
Grieving is natural and you need to grieve and learn from it, but the key to this is to figure out how to work on yourself, change you and your outlook and negative behaviors. Become the happy person you were during the courtship. Then things will turn around. Become the BEST possible version of yourself, that is not easy!
Refrain from reaching out, especially to explain anything, and when you do talk things should be upbeat, light and happy (best possible version of yourself). Explaining is justifying, which is reasoning, which is off limits.
Me: 32 W: 29 T:8 M: 6 D4 S2 M - 8/2008 W is not happy - 1/2014 W wants D - 9/2014 W moved out - 11/2014 D filed - 1/23/2015 D'ed - 2/25/2015 Gave X the Letter - 11/10/2015