He should have told you in advance about his plans.
You're his anchor client, the reason why he went to Dallas knowing already he'd make a profit because of the overnight and the fact that you paid for his flight.
I know a local escort who goes to places if he's invited for an overnight or multiple hour appointment but he's upfront about it and thanks the clients who made his trips possible. He used to travel to Honolulu for an overnight, stay on his own after and thank the client before flying back home with a 1 hour freebie right after he would drop him at the airport.
For the record... I think I coined the term anchor on here but you @Benjamin_Nicholas destroyed the Dallas mafia!
Post number 15. Should I also add the definition of anchor to the Urban dictionary?