Petervert 

A very smart, shy and humble dude who rarely interacts with gals but is secretly a pervert.

Combination of the words 'Peter' (a really kind dude) and 'pervert'.

"He seems really shy and mature."

"Nah, don't be fooled; he's a petervert."

Petervert by DefinitelyNotYourPoetFriend August 30, 2020