I think the answer there is to be a good guy, who happens to be able to “smolder” when looking at your woman.
For decades now the culture has pushed the “bad boy” that women want to tame.
Also “street” savy people, cynics, postmoderns consider a smiling man to be a simpleton, a mark, a chump, a “punk”.
“Playaz” who “got game” have a coldblooded stare. Iceberg Slim wrote about getting called out in the 1940s and 1950s for smiling in front of his boss pimp.
Seriously, I spent 23 years with a brooding man. Trust me girls, if he broods through the blissful first few months, he’ll brood till you grow old. Opt for the guy that is happy with himself....and you.