I spent New Year's with Dan and Heather. When I got home tonight, TL called me and I accidentally slipped and said "Dan and Heather's." I had been telling Dan that he needed to tell TL that he had a girlfriend now--he hasn't seen her since he started dating Heather, but she still invites him to come visit, and I didn't think it was appropriate coming from me.
She wasn't heartbroken by the news, and I didn't expect she'd be, but still... I wish it had come from Dan.