可爱阳光的网名思念已成
[kĕ ài yáng guāng de wăng míng sī niàn yĭ chéng]
Translated as 'Adorable and sunny net name misses you already', this suggests that despite having an upbeat and cheerful persona, the person has someone they deeply miss or think about. It conveys mixed emotions of cheerfulness and longing.