<human>: I want to keep this relativity short. Me and my ex-best friend haven't spoken in over 6 months. Almost everyday I think about how close we were and it really upsets me we have grown so much apart.

Our friendship ended because of numerous things.
Firstly because he liked me and I rejected him twice. I then began a romantic relationship with someone else. This hurt him. he told me i was "the best, worst friend" he has ever had. Thirdly, he got into a relationship of his own, but decided to cut contact with me. Maybe because he didn't want his girl-friend to be jealous/wary of our friendship? 

I wonder if our friendship is even one to rekindle? (does he need space? he doesn't seem like the person he used to be?)
If it is how do i reach out to him without seeming intrusive of his relationship?

Also if you have been through a similar situation, were you  reached out to an old friend, or have had to push one away.... what happened and how did things turn out?

Provide a brief overview of the text.
<bot>: My ex-best friend and i haven't spoken in over 6 months, should i rekindle the friendship despite past problems and his past feelings towards me?