Original Commentary
I don't think there's much we can add here. - Terrence

If she had been pregnant, Robert definitely would've been happier about it. He was more open to the idea than she was which is why she was holding herself in a little more. - Isabel

Modern Commentary
There's a world where Robert was good company during dinner, where he waited patiently and distracted her when she got anxious. This is not that world...

This isn't when they broke up, but I think this is when Jane started realizing that this wasn't how she wanted her life to go. I don't think she knew exactly what she wanted from Robert or how to express it, just that he wasn't providing it.

I mean, they weren't ready for it. Having a baby wouldn't have fixed their relationship. There was no winning here. - Terrence