A source told ET in November that the 38-year-old actor was completely enamored with the musician.
“Channing wants to do nothing but support Jessie J in every way," the source said. "He has described her as 'all goodness' and told his friends she is such 'a super talent.' He seems to have become her No. 1 fan. His friends are so happy he has found someone. She is showing the same support to him."