Life story is it accidentally happen or GOD already made the MAP of it?

Everything happened so fast in my life. And i believe everyone has their own story life which are uniq, flat, bored, hard, awesome, awkward, awful, make us sick sometimes.. but that's life! Have u ever thought about your story life? especially ur love story?
Just like random thoughts : How can i met with him/her like this way? why at that time? why should we met? what's the point of it?

Honestly i think about that many times about more than a hundred times maybe. But it's still mystery for me..
It's like serendipity story (u should watch the movie!) I dont know how to solve it this riddle.. Is there anyone can explain that? or just GOD who can explain it to me..