Lucifer winces hearing him say those words with that tone. Like he was saying the sky is blue or gravity works.

"I can't speak for them but I don't believe that. Give them a chance to show you that isn't how they feel. Give them the chance to surprise you." Lucifer doesn't want to just tell Macaque he's wrong but make room, hopefully, in Macaque's head and heart that they love him as much as they love Mk. That they won't see it as though Macaque is in the wrong. What's happened is unfortunate but it isn't any one person's fault.