Alex was carrying Joanna off the jet when he heard the question and yelled, "His place, Violet. You should know all the stuff he's involved in."
The fact that Aiden never allowed any woman into his house made Alex think it would be unwelcoming. Perhaps it could ruin his moments a little, especially when Aiden recalled leaving some torture tools exposed before he left the house.
It would have been better for them to go to Violet's house since he had never been there, but all the same, Alex had to carry the blame.
"It's the stuff you put on me." He was the one who made him run out of the house like he was crazy, making him leave some things where they should not be, and Aiden would never let in a domestic worker when he was not there to supervise them himself.
Inside the private jet, Alex carried Joanna to the car when Ike arrived, happy to see them together.