really confused.

I'm 4 days away from our second son being born ( exciting I know !!! 💙💙💙) but back to the point , it's 2 am and my fiancés phone goes off while we are sleeping. Me being a woman I looked at it, to my surprise it's his friend Taylor saying he paid the deposit and their first months rent. 🤔 from there of course I had to unlock his phone and read this conversation.... apparently he had looked at condos and decided to get into a lease with his buddy ??????? We've been together almost two years now, have a home, two kids and have had absolutely no issues prior to me stumbling upon this. I immediately wake him up ,of course , and I ask him when he planned on telling me. He plays dumb of course then says after the baby came, I want to be involved in delivery. ARE YOU FUCKING KIDDING ME? then he casually gets out of bed , gets ready for work and leaves. I'm in shock and totally confused. As I was reading this conversation that they've been having for a little over a week via text I realize not once was our family discussed or how it was gonna destroy me or our almost 1 year old son. He talked about the tv he was gonna take from our bedroom and how he was so thankful for his buddy wanting to move with him??????