When there's a conflict or a full-blown falling out, hipsters (i.e. Millennials) don't default into cute. Maybe they'll text a sincere apology. They might deposit concert tickets or a Starbucks e-gift card on Facebook. Or they're likely to swing by your parents' garden and do some pro bono weeding.
Cute is a weak tool of communications. It only works when the transmitter of the message isn't aware of the cuteness. Yeah, that's why babies and kittens are totally compelling.
In addition to not being effective, using cute brands us as old. We Baby Boomers came of age when television was a totally safe medium. Often, a conflict was resolved with cute. On "Lucy," after Desi and Fred realize they need their wives, they give them a box of chocolates. That's after the "girls" - and we all were girls back then - had gobbled down all the chocolates they couldn't proces on the assembly line.
Admittedly, cute is hard-wired into our feeling memory bank. On "Father Knows Best," Jim Anderson spun everything around the dining room table as cute. No coincidence, he called his daughter "Kitten." But we have to resist that temptation. Especially in professional life.
No, don't send the annoyed client a cute e-card. Offer a make-good.