I think once he went to the Dr to see the baby it made him really dial in on where he wanted to be. Then she not taking the job in NYC. I do think they will get back together though unless somebody new comes in the picture to keep her occupied"Tommy's had to deal with a lot of his favorite teachers having sex with his parents."
I don't think Archie is a terrible person but he's stringing Katie and Sunny along. Very indecisive person