After a break up

I have recently ended a relationship with the man I love. The trouble is that i am now expected to completely take back everything i have ever said. i am no longer allowed to text him and when i do he doesn't reply, Please explain why after a break up you loose your best friend and the man you love and it doesn't seem to influence them at all. I would just like to say, if youre missing someone. text them, theres a good chance their missing you too. It's not worth it, to loose someone you cared so deeply about because you're too stubborn to write a text