Despite HaHa's childish antics on screen, he's an amazing father-to-be and husband according to Byul.

Byul tweeted, "My husband is crazy busy these days. Even today he came in after he finished filming past 4 in the morning, and he only slept for a few hours. He still came to the prenatal exercise lessons we scheduled last week. He's a really good husband to be, but he's also a very good father to Dream... I can't help but love him."

Fans commented, "HaHa even went to prenatal exercise. He's such a good husband," "I'm glad he's treating her well because they say that you should treat a woman very well during her pregnancy," and "I'm curious how he was at the lessons."

Isn't that just the sweetest thing? Were you expecting this from HaHa?

SEE ALSO: HYBE employees on Blind continue to expose Min Hee Jin for 'leeching' resources