When he saw the ruthless side of Amara during that mission, instead of fearing her, he fell more deeply in love with her and he understood why he didn't feel anything when he saw Amelia.
This woman in front of him was his woman, the one he truly loved.
He then acted cheeky and tried to join their gang and he actually succeeded in doing so, he was even prepared with some back-up plans in case this idea failed.
What he didn't expect was when Amara saw him for the first time, for a moment she felt she saw him somewhere.
On one hand he was scared but on the other hand he felt touched that she felt he was familiar.
When Amara asked him to take them to his apartment, he was first worried but he followed the address Bill sent to him in advance.
He even cursed Bill when he saw the disgusting apartment, he arranged for him.
