Happy new year. Have you met the lady from the office before? Did you go to his Xmas work party? Was she there? If she was, what did you observe? I'm not rocket scientist but you say he leaves tomorrow for a trip and she messages him saying it can't come fast enough...
NOW, as for everything else, you are being cordial without being saccharine, right? You seriously need to GAL right now and let him know you're not going to die without him. DO NOT be sulky around him. It sounds like he's really struggling to make things right with you in a way yet he's pulling away. It's confusing.
