All in one room (3)

"Am I missing something?" Simon looked down at Kate for an explanation for why Edgar was speaking to her with a bit of hostility in his voice. 

Kate looked up at him with a pitiful expression and shook her head as if she did not know what was going on. 

"Duke Collins, can I ask what is your problem with my date?" Simon decided to find out for himself since Kate didn't know. 

"No," Edgar bluntly replied. Edgar had no reason to answer any of Simon's questions. Why was Simon even standing before him with Kate? They weren't friends and hardly acquaintances. Kate should have at least an ounce of common sense to know not to approach him.

"I don't think you should get in between the relationships of two sisters. Alessandra-"