Let me tell you about what I learned the last time this happened to me.
As you know, W left me about 18 months ago and I was able to DB and get her back.
When she left, she posted tons of stuff on FB. Happy and out and about. She even posted a video of herself dancing to the song "Happy" by pharrel.
This was all a week after she left me. She was at baseball games, coffee shops, out with friends, joined a running group and surrounded by men.
She was done and over me. I was convinced.
When we got back together, we talked about our separation. She told me she cried on her way to work. Would call all her friends and sob. And she would cry on her way home from work. She would cry to her mom. She started to miss me - I was pitch black NC.
She said she started missing our friendship and just being able to share things about her day with me. She started to wonder if I was done. She even asked her mom if she thought I WOULD TAKE HER BACK!!!
Fact is, I was convinced she had forgotten me. I felt it in my heart and in my soul. I was wrong.
You have absolutely no idea what your H is thinking. But I do know this, if he EVER felt anything for you, he hasn't forgotten you.
It takes time for these WAS's to figure their stuff out. They need to realize that we weren't the sole reason for their unhappiness. Now that we aren't around, who do they point the finger at?
Give him lots and lots of time to come these realizations organically, without any assistance from you. THAT'S when he might have an epiphany and look at the destruction he caused.
I know it hurts, Hope. I'm right there with you. Trust the process. And while you are trusting the process, keep working on you as best you can.
We're gonna get you nice and polished up so when H does look back over his shoulder, he would be an absolute fool to leave for good.