My friend blocked me without explanation?

my friend blocked me without explanation or talking to me first, a whole year after i supposedly betrayed her. all i did was "date the guy she liked", but i admitted i was jealous of her and apologised for having “rubbed it in her face”, but i apologised for that and i also went on to marry that guy years later so i dont know why she had to betray me like that by blocking me. what should i do? Is this just a sign that she wasn’t worth it as a friend anyway?

Updates
8 mo
She pretended to be cool with me, even best friends with me, for a year after that, then after I did her a favour, she blocked me out of the blue? It’s snakey
My friend blocked me without explanation?
Post Opinion