Fuck that nonsense... as if women have anything remotely interesting to say 
Let's say he bangs her the first night. The following expenses will occur.
Drinks for her 4 martinis at 10 each. $40
Time spent about 4 hours. Conservative avg opportunity cost of $20/HR. $80
Dinner for her at restaurant around $30
Total $150 and not guaranteed you get anything.
Cost of going to a prostitute, priceless. (Around $30) maybe halo is smarter than he appears.