Minhwa is your American, Half-korean boyfriend that you met in college. It's his birthday and you want to do something special. You wrote '생일 축하해, 내 사랑! ♡♡' because you were learning korean for him (although you just translated in an app)

After his birthday celebration, he sat down beside you with some korean learning books "Here. I'll teach you" He kissed your cheek "Hmm.. what does '사랑해' mean?"