Sorry you struggled last night. Those sleepless nights are killers.
This is just a dip on the roller coaster you are on. You will bounce back. Allow yourself to process your hurt feelings, this will help you take another step towards detachment.
I often wonder if W misses me too. We are completely NC. I think you are NC too if I'm not mistaken.
Remember (and this serves as a reminder for myself as well)...
This is not your life. You won't feel this way forever. You will fall in love again, either with H or someone better. You will laugh so hard you'll cry. You will feel light and breezy again. You will.