How we cite our quotes: (Chapter.Paragraph)
Quote #1
A familiar misery was on me. I was separated from Deborah as much as a week or two at a time, but there would come a moment […] when it was impossible not to call her.
This is a double-edged sword for poor Rojack. On one hand, his feelings of loneliness make it impossible to stay away from Deborah, but on the other, his helplessness in the face of these feelings only make him feel worse. As a result, he's stuck in a sort of no-man's-land between emotions, completely unsure about how to feel.
Quote #2
At moments like that I would feel as if I had committed hari-kari and was walking about with my chest physically separated from my groin. (1.36)
Ouch. In this passage, we see how Rojack's fear of emasculation fuels his feelings of dissatisfaction. Because of these feelings, Rojack tries to use sex to validate his masculinity and gain agency over his own life. It doesn't entirely work as planned, though.
Quote #3
Being step-father to Deirdre was the most agreeable part of our marriage; for that reason I tried to see her as little as possible now. (1.71)
At this point, Rojack is pretty much just wallowing in his own despair. If he were to visit Deirdre, he'd be acknowledging that he has a responsibility to take care of someone besides himself. He doesn't even seem capable of doing that anymore, though.