Playing Suicide Hotline

Why do I spend my nights this way?
I just phoned a girl I've never met, never spoken to in my life, to convince her not to kill herself.
You're probably confused. Let me explain.
Okay. So, I'm more or less a shut in. I don't leave my house. Thinking right now, I haven't been outside in over a week. So I don't have many friends, but the few friends I have I don't know their friends.
My best friend I've ever had has a friend going through depression issues. Tonight, she was talking to her and she started telling my friend that she didn't see the point of life anymore.
Then she went offline and wouldn't answer texts.
My friend has medical issues triggered by stress. When she gets stressed, she can get pretty sick. So I offered to phone her friend.
My friend didn't have her number. So I went into my phone book and tracked it down using only her last name and street.
And then I called her, and stopped her from killing herself.
It was really weird. I was looking on all these suicide websites listing all the reasons they said on why you shouldn't kill yourself, then I'm like, eff this. So I just started talking to her.
And, not to sound too egotistical, I SAVED HER LIFE.
And then we hung up after I gave her my number and told her to call or text or message or add me anytime she wanted.
And then I went to my kitchen and made pizza in the middle of the night.
Then I came on here.
Also, is anyone still reading this? Because I don't think you are.
So I'm bragging about saving someones life to no one. Oh well.

Also, I'm aware that I could have simply delayed her suicide a day. But she refuses to go back to therapy, and its weird for her to talk to people when she has to see them later, so I'm hoping she'll actually use me as her suicide hotline.
Oh, she just added me on Facebook. That's good.