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What is the relationship between two people who send good night messages every day? Will it be a normal friend relationship?

1 Have a good impression on each other. 2 lovers are just good friends, but 3 is the least likely, because I have a good friend of the opposite sex, just a friend, just like a buddy, but no matter how good it is, I won't send any good night messages. Who will send it to our buddies every day? No one confessed, so it was ambiguous. So you know. ............