It's so weird how the author is writing these two working adults like two 12 years old. I'm not saying it's bad, it's just quite surprising to see these kind of plot points in a love story between office workers.
If just holding her hand causes him this much stress & sweat, kissing her is going to give him a heart attack. And sex? Hahaha. Maybe in his next life? Boyfriend- Kun needs to learn how to deal. Tiddy-Zawa is a handful of a woman. She needs a M-A-N, not a sweaty, nervous middle school boy.