我亲爱的好菇凉不要悲伤
[wŏ qīn ài de hăo gū liáng bù yào bēi shāng]
Translates literally into 'My dear little mushroom don’t be sad', however '好姑娘' typically means 'sweet/good girl', but '好菇凉' with character alteration may hint some humorous intention behind; overall it carries a tone of gentle encouragement towards those girls he/she loves, cheering them up and providing comfort in face of unhappiness.