Overthinking

My boyfriend is having a friend over for a few days, but he doesn’t want me to meet them. I suggested we have dinner together because it’s one of his close friends but he said no to the idea. (We don’t live together). On top of that, apparently he’s had this planned for weeks and is just now telling. He told me his friend is crashing from wed to Fri but In this screenshot it says he’s staying till the 31st. Not only is My gut is telling me something’s up but also I’m mad because we made plans to spend New Years weekend together and now this. What do you guys think? I was trying to ask my bf questions so I could understand more of the plans and of this weekend but he said I was asking for a fight and hung up on me. I don’t think I’m overthinking or asking for a fight… If I am overthinking I wanna stop myself.