premedbails,
"Instead of feeling better, your job is to get better at feeling, and as a result you become intensely present"... try to see feelings as currents in a river that flow with different speeds... accept them, cry if you need to... treat yourself as a precious person, undergoing an important transition. The feelings won't last forever... your job is to be patient with yourself and learn from this experience about what is acceptable to you in a partner and what isn't (the "non-negotiables"). Maybe Life is getting him out of your life to prevent further pain, try to trust Life is on your side even if it isn't immediately apparent...
I recommend the books "The Language of Letting Go" and "Codependent No More" by Melody Beattie, therapy has been helpful to me as well.
Hugs!! it's a process... in the end there is acceptance ...