they prolly wouldn't call it a 'project' or just ask to 'borrow' her away if he thinks she's with a friend but even talking to a normal coworker outside of work could prolly be draining
Yunimaru notes when looking at Konno interacting with the man that Konno looks like she wants to die. Yunimaru seems to assume that Konno lets herself be real with her but is faking her enthusiasm with her co-worker.