Jace knew that their emotions were feeding each others - it was just part of the bond. It was part of why he was trying not to lose his temper. He knew he'd fucked up by not figuring things out sooner. It was part of why he'd come home to talk instead of talking over the network. He didn't regret having gone to Damien's because he'd enjoyed himself but he did regret how badly he'd hurt Alec. He wasn't going to apologize though. Not yet. One look at the other shadowhunters face told him Alec was too pissed off for him to apologize. If there had been any doubt about that from that calm tone in his voice.
This wasn't a time for him to make smart comments, or to dance around the issue. Or delay this conversation even though a part of him really really didn't want to have it. "Which is why I came home. So we could discuss it." He said, forcing his voice to come out calm and quiet. Honesty was probably the best policy right now right? "I didn't let myself realize on a conscious level that you and I were in a relationship of our own. I knew you'd stayed with Mark and I but I didn't...let myself admit all of what that meant until you pointed it out to me."