Life hacks. On a date in Sweden? Arrange your buddy to send you a text message saying you just saved someone's life. Watch jealousy turn to desire when you get a text message (another girl??), and say, "Oh - I just saved someone's life. See?"
I'm just kidding. My real point is that a mailed letter (or email) sounds more appropriate than a text message. But then again maybe not!
Wouldn't work in the US, I find that the social value of having saved someone's life is somewhere between zero and negative, unless that someone belongs to your interlocutor's subculture.
You tell an investor in SF, in passing, "I talked a junkie off the bridge and took her away before the cops showed up, and let her stay at my place for six months until she cleaned up", and they'll think you are mad, not honorable.
(Not a true story; composite of three separate incidents)
I'm just kidding. My real point is that a mailed letter (or email) sounds more appropriate than a text message. But then again maybe not!