<human>: Can you provide a brief rundown of the text in within 3 sentences?

I love this girl, she's literally my other half. We've been together twelve* months now and we're planning to move in together, I'm the happiest I've ever been in my life. We've talked a little bit about marriage and I've tentatively started ring shopping (but probably won't officially ask till maybe our next anniversary).

But the truth is, we met on Match.com, and I was only on there because I was looking to have sex one more time before I killed myself. 

This wasn't a cry for help kind of thing, this was serious, I had the letter written out, I bought a gun, I got my affairs in order, arranged my will and put my assets together. 

She answered my messages and we had dinner, we hit it off instantly but didn't go home together. So I decided to put off my end till after our next date, and the next, and the next, and so on. 

Because I wanted to keep seeing her, and because I started falling for her, I sold the gun, got a therapist, got on a prescription for Lexapro, and started hitting the gym. I lost sixty pounds (I was a fat motherfucker before) I'm happy and healthy for the first time in my life and it's all because of her.

But I was wondering, is this the kind of thing I should just keep to myself? Or does she deserve to know that she is literally the only reason I am alive today?

I just worry that telling her might make our relationship weird. She knew I was depressed before we met, and she knows I'm seeing a therapist and I'm on antidepressants, but she has no idea how fucking bad it was before we got together. 

I mean it was "put a gun in my mouth every night" bad for quite a while.
<bot>: Should I tell my long term gf that going out with her kept me from killing myself? Would it be romantic? Creepy?