2 Steps forward, One Step back

So, I'd been doing really well, starting to finally move out of the anger phase and just into the whatever phase. Went on a good date with a cute guy (a tall guy). Had a very nice little dinner party with the girls (sangria/mexican night). All along feeling a sadness, but it was lessening and the anger had definitely subsided. I had to contact him for work stuff, a couple of times...I was hesitant, but it was necessary. He was polite and extremely helpful, so than that's when it happened, I just started to really miss him. Not the asshole him, just the side of him that would chat with me all day on gchat and make me laugh and share really cool things --- that side. It wasn't even a romantic thing really, just more on the lines of friendship. And, so I talked to him a few times on email and he seemed to respond though a little hesitant, I told him some really funny things, and he shared something interesting with me about a woman at work that I don't particularly care for. So things were going along nicely, I was feeling better. Spirits lifted....and then, I had to do it...I sent him an email on gchat. Just like hey thanks for being cool at work, sorry about all the stuff a few weeks ago, its been hard for me, that's really it. Nothing much to it, just one small paragraph. And, then, nothing....he never wrote back, never responded. I don't know why it hurts so badly but it just does. I shouldn't have ever apologized for anything, I felt bad about how I reacted to his horrible behavior, but in reality he is the one that needs to apologize. He is the one who hurt me and evidence is mounting towards it being deliberate and calculated. But anyhow, I did it to myself so I have to accept what I did, 2 steps forward, one step back.