'Reply 1994' co-stars Go Ara and Son Ho Joon recently exchanged a few funny and cute tweets that have been garnering a lot of attention.

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It all started when Go Ara posted a picture of herself with freshly cut hair for her role in the drama along with nostalgic message, "The day I first cut my hair ^^*." The playful Son Ho Joon then replied, "Let's lose weight......."  Oh no, he didn't!

Go Ara fired back with a picture of them together, posing cutely for the camera. She wrote, "My tightly clenched fist in this picture is saying, 'Haitai (Son Ho Joon's character) oppa~^^ What did you say?^^ kekeke.'"

Ultimately, this did the trick, as Son Ho Joon posted a picture of himself "in tears," along with the apologetic message, "I'm telling you it was a joke, a joke, joke, joke~!!!!!!!!!!!!  I did wrong ?_?."  Perhaps he had dealt with the fist before.

Check out their full exchange of fun messages and cute pictures below!