@thor As a person who likes to compliment other people, the answer is easy: Just say: "Thank you!" and move on with your life. Nobody expects anything more.
A compliment is just a way to express appreciation. I appreciate smart people for their intelligence, kind people for their kindness, or pretty people for their beauty. It's not a declaration of love. It's nothing to feel awkward about.
bonifartius 𒂼𒄄
