<human>: Can you succinctly summarize the text in 1-3 sentences?

About a year ago, I left my ex (Alex) very suddenly for another man (Blake). Alex treated me very well, but I fell in love with Blake almost instantly. We are still together now, and I do not at all regret my decision to be with Blake who I believe is the love of my life. 

I do regret the way I treated Alex in the last month of our relationship. I was torn between Alex and Blake and took Alex for granted, stringing him along, telling him he had nothing to worry about. I know that Alex wasn't the right guy for me, I had been having doubts for a while, but he didn't deserve the way I treated him. 

It has been a year, I am still deliriously happy with Blake but I continue to get waves of guilt that consume me. I feel like I don't deserve that everything worked out so perfectly for me, and that I don't deserve Blake. I desperately want to move on and forgive myself, but I just can't.  I know I did Alex wrong and have learned from my mistakes. He doesn't want me to contact him so I can't apologize but I need to get closure somehow.
<bot>: Betrayed someone who loved me a year ago, now can't move on from the guilt and feel like I don't deserve happiness. I just want closure.