I wasn't able to translate the one written on Dohyung's chest. But i was able to translate this: http://www.mangago.zone/read-manga/a_man_like_you/uu/a_man_like_you-chapter-34/41/
It says in Chinese (according to Google Translate) : "That little face really makes me excited!"
（/TДT)/
Oh and on page http://www.mangago.zone/read-manga/a_man_like_you/uu/a_man_like_you-chapter-34/48/
It says "It's so exciting to see that expression for a long time!"
The one written on Donghyun's chest means "break up."
Thank you (๑•ㅂ•)و✧
thanks~
(╬￣皿￣)凸 i will definitely gonna hate that antagonist... and please, for those people who understand the chinese words.. please tell me what is it ╥﹏╥ ...