Was I wrong to end a 20-year friendship over this dating boundary?

About half a year ago, me and one of my best and oldest friends went to a speed dating event. Unfortunatly, the girl that broke my heart was there too. On the way home from the event, me and my friend discussed her being there and he could see I was still struggling.

The next day, I learned he and her had actually matched and would be going on a date. This made me feel very uncomfortable, because I had decided some time earlier to cut her out of my life for ever. She really hurt me and it took me a long time to get over her.

So I decided to meet up with him and tell him that if he would want to date her, that’s his choice, but that it would mean I wouldn’t be able to hang out with him anymore. Every tie with her, even indirect ties, would be too upsetting for me.

He tried to convince me to just accept him dating her and accused me of manipulating him. I, on the other hand, felt I was just setting a boundary to protect myself.

He knew how she treated me in the past and how much I had suffered from her behavior towards me, but he decided to go an the date with her anyway. So he chose the possibility of an opportunity with a woman he met for six minutes over a twenty year friendship.

I have doubted whether I did the right thing setting this boundary though. I hate the fact that our friendship ended, but I felt I had to protect myself. I tried reaching out to him recently, but turns out he blocked me. Which makes me feel like I am the bad one here even more..

Was I wrong to end a 20-year friendship over this dating boundary?
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