The duo, along with pal actress Joanna Garcia, reportedly hit Bardot in Hollywood for a night out, and according to a source: 'They definitely came together and sat together. Cameron would lean over and chat with Matthew, but it didn't seem too flirty.'
Things stayed strictly friendly and trio spent the night hanging out together, E Online reports.
'Diaz and Garcia seemed tight and had a great time. Matthew and Cameron had some one-on-one time in the lounge, but nothing seemed too intimate. Matthew seemed to be a huge gentleman and genuinely cared for both ladies the entire night.'
Later, Diaz and Morrison were reportedly snapped making a getaway, with the Glee star behind the wheel.
Previously, the Knight & Day actress has been linked with New York Yankees star Alex Rodriguez.