This is like pure, triple-distilled desperation. Guys, this isn't some kind of noble gesture. This is weird, predatory grossness.
I believe every girl deserves a second chance and I want to be the guy who gives it to you.
Honestly I feel like if you're the kind of person to write this, you're beyond any explanation as to why it's so fucking terrible. But the whole "kindness of strangers" thing should extend to smiling politely or maybe holding the door for the person behind you. "I'll capitalize on what may be a severe low point in your life and hope you're desperate enough to give me a chance" is not a kindness. It's fucking creepy.
Props to the guy for that 30-60 day expiration date though. Wouldn't want to come off as too needy.