Becoming snippy with her, Percy's retort was, "I didn't want to come over because I didn't want Charlie to be offended. You see how Ron overreacted. Merlin help me if Charlie thinks I was somehow trying to steal his girlfriend." Hrmph.
He looked at his wine glass and wished he could get a refill, but was too stubborn to ask Penny for one. "Who would I tell my problems to? My family? Ha! And I would never bother my co-workers with my private affairs."