Very sorry to hear about what you're going through.
Unfortunately, only time and talking about it are the only real way to heal the emotional pain.
But, something else you can do is engage in constructive soothing activities to help distract yourself. Take up a new hobby or activity. Get out, meet new people. Volunteer. Do those things that make yourself feel good about yourself.
Who knows, perhaps you might meet a new love interest.
Me: 48 - Married, straight, male
Shiela: My wife.
Suzanne: My FWB
Adam: Shiela's LDR