As a man who's recently separated, I'm extremely lonely. The pains of both feels crushing on my thoughts and soul. I know the Lord is with me and His Spirit comforts me. Still, the reality of my existence is unescapable and the enemy has a field day with me.
I really feel for you brother. I know what its like a bit.
Almost 5 years ago my wife decided she didn't want to be married to me anymore and so we separated and then divorced.
My children were still young, 6, 7 and 10.
Emotionally I wanted to run to mum to 'make it all better', to free me from the pain.
For the first 6 months I walked between 5 and 10 miles every single day, I think to try to keep my mind off it.
I felt so very, very frustrated that because my wife 'said so' I could no longer be a 'proper' dad to my children.
And time after time, until about 6 months ago maybe, I often felt utterly crushed by loneliness. I have no friends, I rarely see any family apart from my mum (although I can see my children whenever time and money allows), I have no car, I live in a little flat, I have no savings and live pay-check to pay-check. I have lost count of the number of times I have thought about ways to kill myself. Thankfully those thoughts seem to be gone altogether now.
And now I feel like I have peace with these things.
I am sure God Loves me and knows what He is doing, and must know that enduring great pain sometimes is important for our growth in Love.
I'm sure He Loves you too, and no-one falls off His radar.
Keeping as busy as I could was the biggest help. I would play Minecraft for 5 and 6 hours at a time. And I learned and played free poker on the internet for hours on end because it meant, although I was alone in my flat, I was virtually sat at a table with 8 or 9 other real people. I wish I'd discovered this web-site sooner too!
Do the best you can to look after yourself properly - diet, fresh-air, get out and about, etc.
And, of course, do what you can to keep your flame of faith burning bright.
One day at a time, brother.