I need a generic response for when girls playfully say "i love you"?

look, I've never been comfortable when a girl says "i love you" playfully/unmeaningful way. It just makes me uneasy, I don't know why...i don't care why. I just want to know what's a go-to response that I can use? thanks
I need a generic response for when girls playfully say "i love you"?
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