Either the man was more human than he wanted to admit, or the past was put far enough behind that he wouldn't stop her from moving forward - Greed wasn't sure which.
If it was the former, then his next question would only help serve in the long run to try and yank that part to the forefront, and if it was the latter, well, he wasn't losing out on anything anyway.
"You know her better than anybody else in the Nexus, save for the one guy that she probably shouldn't be seeing right now," Greed said. "She's got the emotional stability of a ball on a see-saw, so mind lending a hand and letting Mustang or Odd know if you notice any red flags with her?"