I'll also add a title later this week. I need to pick something general or a quote that I can find online.
Spoiler:
It's perfectly understandable for him to feel that way with Danny and vice versa. They don't know each other and it's only a matter of time until their paths cross again after the events that happened on this show.
There was a scene when the cops came to Midland Circle where Danny used his fist and Luke was there to assist him. They've really built up the dynamic of the two on this show.