This photograph of Jamie Harrington, a teenager from Ballymun, Ireland, was posted on the Humans of Dublin Facebook page earlier this week.
The photo was accompanied by Harrington's account of an encounter with a man sitting on the ledge of Ha’penny Bridge.
I was just on my way to the American sweet shop to buy some Gatorade, when I saw this guy in his 30s sitting on the ledge of the bridge. I just thought, "Wow..." I stopped and asked him if he was okay, but I knew from the look in his eyes he wasn't, and he didn't say anything either, but I saw tears coming from his eyes. I pleaded with him for a while to come down and sit on the steps, and eventually he did.
Harrington said he refused to leave the man on his own and called for help, despite the man's protests.
We sat on the sidewalk on the south side of the Liffey and talked for about 45 minutes, about what was happening to him, why was he feeling that way... I couldn't leave him there alone, but I had to go, so I was going to ring an ambulance. I told him they could help him feel better. But he was like "Please, please don't call them, I'm fine, I just want to walk around for a while, I'm gonna be okay!"
I told him to please let me ring an ambulance, that I wouldn't sleep knowing he was just walking around alone. So I rang it, and he was taken to St. James Hospital.
The man then got in touch a few months later, Harrington said.
I got his number so I would know what was going on with him for a good while... And about three months ago, he texted me that his wife is pregnant, they're having a boy, and they're naming him after me.
Can you believe that? They're going to name their child after me... He said in that moment that I approached him, he was just about to jump, and those few words saved his life. That they're still ringing in his head every day. "Are you okay?" I can't really understand how these few words could save his life, but he told me, "Imagine if nobody ever asked you those words."
The Facebook post has been shared and liked by thousands.
And fans flooded the page with comments:
Caroline Quinn, who worked with Harrington, said: "He is a truly unique kid that has a bright future."
Harrington told the Irish Mirror that he doesn't consider himself to be a hero: "I was just being nice and that costs nothing at all."
Harrington told BuzzFeed News: "It is crazy, I never thought this story would go viral."
"It was just instinct to help that man and now lots of people around the world know about it," he said. "I hope it makes people open their eyes to what is going on around them. Too many people walk around with their head buried in their phone.”