"love covers all wrongs" (10:12). Does that mean love hides wrongdoing?

Proverbs uses the same Hebrew verb and noun, kasah and pesha', for a covering it praises and for one it warns against. It praises: "Hatred stirs up strife, but love covers all wrongs" (10:12), and "He who covers an offense promotes love; but he who repeats a matter separates best friends" (Proverbs 17:9). It warns: "He who conceals his sins doesn’t prosper, but whoever confesses and renounces them finds mercy" (Proverbs 28:13). In 10:12 and 17:9 the wrongs covered aren't said to be the coverer's own. In 28:13 they are "his sins", and the saying goes on to confessing them. This chapter also warns against hiding hatred: "He who hides hatred has lying lips" (10:18), with the verb of 10:12. So the book doesn't praise every covering, and in 10:12 it sets love's covering against hatred that "stirs up strife". The New Testament has words close to 10:12. Peter (1 Peter 1:1) writes, "for love covers a multitude of sins" (1 Peter 4:8), and James (James 1:1) ends his letter, "he who turns a sinner from the error of his way will save a soul from death and will cover a multitude of sins" (James 5:20). Neither says where the words come from, and these notes don't say they are quoting Proverbs.