Phil's expression crinkled a bit in confusion when she questioned him about Diana's pregnancy. Hadn't he told her that already? "Yea, she just finished her first trimester, with the acceleration," he replied, cautious now that he'd apparently not told her about the fact that Diana was pregnant. Even though he didn't owe her an explanation of any kind, Phil found that he wanted to explain.
"She was ready to have a kid. We discussed it first, came to an agreement that she would give the baby to Arva and that we weren't exclusive by any means. I go with her to the clinic for check ups." He paused for a minute there, debating on whether or not it he should tell her about the fact that he and Diana were having sex occasionally. Phil didn't tell her about who he was having sex with or when, and likewise she didn't tell him about who she was having sex with. Since she'd made it clear she wasn't looking to get pregnant, he hadn't even considered it something that would bother her. So he waited to see what her reaction was going to be.