"Wheatley's my core~"
Wheatley felt happier in that moment than he ever had in his life. Chell was singing to him. Her voice was lovely, but it was made even sweeter because she sang about how much she trusted him— how he gave her hope. The way Chell looked at him as she smiled was wonderful and frightening— and she kept getting closer. She kissed him on the cheek as her song came to an end, and Wheatley fell to the floor in stunned bliss.
Maybe if he did a good job helping her escape, he would get another kiss.