The Heartbreak of the Truth

I've done a lot of things in my life. Some experiences I get, are the one you least expect, and the ones you want the least. I remember it like it was yesterday. It was getting late, I was in my room finishing up some homework. I get a phone call. I pick up and hear sobbing at the end of the line.
"(Name)?"
She kept crying to me saying she couldn't do it anymore. I didn't understand what she meant until I hear her say she was at the bridge. Then it all clicked.
"Hey! Let'd talk about this properly! Let's not go anywhere near the bridge!?"
She kept talking about how it hurts and all she wanted to do was die.
All I could think of was the same desperate pleas you hear in the movies.
But it didn't have the same ending as the movies.
I say I love you.
I hear screams in the background and the phone call ends.
I hope it wasn't true. I pleaded that it wasn't real, that it was all a dream.
But all I got was an invitation to her funeral. That's how my first love ended.
I always wonder, if my I love you killed her. Or that if it was someone else she called, would she still be here? What if I didn't pick up the phone call? What if I didn't say those pleas and said something different?
But what hurt the most, was her last words.

"I'm sorry."

Sorry that she jumped? Or that she didn't love me back?