He said it himself in the gym scene with his friend- he knows other men that hooked up with American women who basically became sugar mamas and spoiled them with everything, so he’s looking at this rat that made him believe that was going to happen with him, only to flip it, escape her own life, move to his country, and make him work harder to pay for half of the existence she expects out there. Was she EVER honest with him that she NEVER started the green card/visa paperwork?? Of course he’s bitter. He’s still a jackass, but she prob already knew that going in, she’s not that stupid. She just thought she would be able to control him. Trying to show him what she’s gifted him by making him leave the clothes only made him more mad. I’m actually glad he turned the tables and grabbed the dog. Classic case of “the more you F around, the more you’re gonna find out”.