菇凉我爱你先森我想你
[gū liáng wŏ ài nĭ xiān sēn wŏ xiăng nĭ]
Combining cute internet slang terms, 'gu liang (girl)' 'Ai ni (love you)', xian shen (mr.), it's like saying 'Girl, I love you; Mr., I miss you'. This is typical youthful romantic internet expression.