FASCINATION ABOUT HAHA

A friend who’s in his thirties and savvy, with buddies of all ages, uses “hehe.” I discover it charming—he’s an excellent speller, and he’s a energetic, tidy writer, and his “hehe”s are a strange thriller. I understand what they suggest: welcoming, rather sneaky giggling at a shared joke. But why the single “e”? 1st he moist he