<human>: Can you provide a brief overview of the text?

My ex and I dated for over five years. It ended in a really messy break up where I told him I hated him and never wanted to talk to him again because of his emotional affair. I got a bf soon after that I have been with for a little over a year. 

Over time, the ex and I developed a lot of mutual friends. I was hanging out with one recently who said that ex didn't hate me and I should try to talk to him and he doesn't reach out to me because he's scared I'll say awful things again like when we broke up. 

Since that convo, I've been having dreams about my ex and just feel like it's my subconscious telling me I need some closure. I don't want to be friends with ex out of respect for my current bf, I just want to say something along the lines of "I've been thinking about you lately and I just want you to know that I don't hate you anymore" but I want it to sound more eloquent. Any advice for how to word this? Also, the mutual friend is having a bday party in the fall and he might be there so it would be good to say something nice that isn't too nice to make him think that I want a friendship.
<bot>: BF and I had a messy break up a year and a half ago. I'm finally ready to tell him I don't hate him anymore but I need the right way to phrase it in the text message.