I told my boyfriend to unfriend his ex and he dumped me?

Anonymous

I told my boyfriend to unfriend his ex on Facebook.

I sent him a message saying.

"Please unfriend her, you know how nasty she was to you, I don't think you should have her as someone you talk to and you shouldn't even let her be your friend in real life or on anything".

He said to me.

"If you ask, one more time, we are done".

I replied.

"I want you to remove her from your friends list and stop contact with her".

He replied.

"My heart is shattered. I haven't chosen you over her. Eventually you will realize that. Take care and I wish you the best".

Then he blocked me on everything.

What the hell does all of that mean?

Updates
10 mo
EDIT

* I haven't chosen her over you
Updates
10 mo
Based on most of the answers. It looks like he was still Inlove with his ex. Wow. Ok. Thanks guys!
Updates
10 mo
Well, not even a week later he called me and told me that he would only be willing to move past the argument if I could learn how to trust him. He says that his (toxic) ex and him are friends on Facebook because they put the past behind them and surprising the ex liked our engagement announcement on his Facebook page and even commented 'congratulations', so, I've decided to get back into my relationship with him and will not ask him to remove Facebook friends again. Lesson learned 😭
I told my boyfriend to unfriend his ex and he dumped me?
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