I like the twist.
The last line is executed perfectly.
I think maybe the run-up is too long - everything before "I don't know what to say though" is superfluous.
For me, your voice sounds annoyingly chirpy/chatty. If it was more enigmatic, it would lend some mood and tension.
I want to buy into this person's plight and believe there's a serious suicide bid afoot before you floor me with the twist and make me hate myself for caring.
Don't worry about padding a piece out to make it longer - this could pack a punch with a halved and carefully selected word count. There's a little diamond wrapped up in here. x