You aren’t the first and will not be the last to sleep with exes or soon to be exes. Not the end of the world

Well he is a grown man capable of his own choices and decisions. Don’t make it about him. He isn’t a teenager losing virginity to you. Grown men know what they do. By the same token you could consider his actions selfish. He knows that when you drink you make bad choices yet he chooses to sleep with you. Plus he knows you are vulnerable and desperate right now so he knows love bombing makes you weak so he’s not even a bit confused. And you know he is manipulative. So no way to know what’s on his mind. He’s doing major love bombing. And sleeping together was a culmination of intense love bombing that he knows always works on you.

So I’d stop portraying him as innocent angel falling into claws of conniving selfish Hope. It’s far from the truth

I’d not be writing lengthy letters and texts and emails. You’ve been writing those all along but. Nothing ever changes as it accomplished only one thing: keep communication open.

Just say “that was a moment of weakness, i do appreciate the support and want to part on good terms, but I am moving on with my life and need to focus on job search”.

Telling him how you needed physical closeness is unnecessary. It’s not something he needs to know.