perv on

verb

1. slang.
   tr, preposition to make unwanted sexual advances towards

Example Sentences

While some of us make too much effort on Valentine’s Day, others haven’t even mastered the first rule of dating: don’t perv on someone who is not your partner.

From The Guardian

Section 230, she writes, “is the No. 1 reason the internet is a safe space for peddlers of fake news, graphic death threats, conspiracy theories, Russian propaganda, racist slurs, Nazi hate speech, anti-L.G.B.T.Q. vitriol, vivid promotions of violence against women, instructions for how to make your own bomb and phony dating profiles offering sex in someone else’s name,” which is to say it’s the “enabler of every … troll, psycho and perv on the internet.”

From New York Times