a nice guy is nice to men, women, children, animals, rocks and even lettuce. because he is a nice human being and believes that if he can't make the world a better place, at least he won't make it worse.
a nice guy as per your description, is a neckbeard trilbyblazer, who believes in the friendzone and expects an impossibly dream woman will hopelessly fall for him somehow via the internet, without any effort on his part, or without cultivating an interesting personality or losing a couple (hundred) pounds.

Busty Meiko Cosplay by Saku Absolutely Massive
Idol Gyakur*pe! Boasts Sex & Stardom
Hatsune Miku Ero-MMD “How Many Has She Starred In!?”
Phantom World Moist & Chaotic
Subarashii Sekai Dead Serious