"Excuse me, Jack? You walk into your boyfriend's house, for what could be reasonably assumed is the first time, and before you've even really started learning the ins and outs of his family dynamic, you immediately demand changes to it? Even if you were married to Leo, you wouldn't have the right to throw your weight at his sons like that, and the fact that you tried to exercise this non-existent authority literally the day after you first met them, has lost you a very high number of points by my measure."
NGL, I'm really hoping Leo tells him off for that next time, because I'm quite certain there's going to be a next time. The fact that Jack later admitted to Ludus that his own dad was, shall we say, controlling, has me wondering how Jack didn't notice himself acting the same way.