He can pass your number to a friend โ or a stranger can text claiming to be him. So before the twin trusts a new number, she checks.
When you give out your number, you drop a quick note โ even two words:
- "Mike, met at the club, tequila shot, Raiders hat."
On his first text, she answers like always โ but drops a callback only the real guy passes: "you make it home ok with that shot? ๐"
Pass โ it's him, full profile unlocked. Fail โ she flags it: "โ ๏ธ might not be Mike." You decide: block, or treat him as new.
It's invisible โ he never knows he was tested. And those same notes power the personalization: his job, his dog, his drink.