Boyfriend (22M) didn’t include me (21F) on the plans we’d made together

My boyfriend and I have been together for 4 years now. We also live together and have a strong connection. It’s almost Lunar New Year, so we traveled abroad to celebrate with his family.
We’ve been here for nearly 2 weeks now, and I’ve spent each day with his family. I don’t tag along when he goes out with friends though, because he hasn’t seen them in a year so I’m giving him space. However, one of our mutual friends that lives here just got married. Unfortunately, we missed the wedding so I haven’t gotten to meet his wife yet.
I asked my boyfriend to make plans with them, and 2 days ago he informed me of the plans. He said that we will go watch the World Cup together. But he told our friend that I don’t like soccer; it’s not true, he was using me as an excuse to not watch the game. So I offered up some other ideas for us to do.
BF said the time was up in the air, but that plans might also change. He said it would be around the evening. I trusted what he said, so I didn’t text the friend or his wife. Well, as time went by he didn’t mention anything so I just assumed things were the same. Maybe that’s my fault. But then he said, “I’m going to the coffee shop with my [different] friend.†I asked, “what about our plans tonight?†And he basically told me not to worry.
Hours past, and I heard nothing from my boyfriend. He finally texted me back and said he’s watching the game at a coffee shop. I asked, “with who?†And he said “didn’t i already tell you? With [mutual friend]†I was confused because he told me that he’d be hanging out with someone else and then hours later he texts me (not even call) to say that he’s carrying on the plans without me. I texted him once more and asked what happened to the original plan, why can’t I come. And he hasn’t responded to me. It’s been an hour since he last did.
I’m extremely upset because I feel like it’s very rude to continue the plans without telling me when to come. Or to come at all. When he gets home, I don’t know how to talk to him about it. I don’t even know if I should be upset; or if I should’ve just let him enjoy time with his friends. But I feel like since he’s the one who told me about the plans, he should’ve at least had the decency to cancel on me. Any advice is welcomed.
TL;DR — Boyfriend and I came abroad to see his family and friends. He made plans with me, a mutual friend + their wife. He left to go do something with someone, then carried on the plans without me. He didn’t even cancel on me, he just went there and didn’t answer my texts. Now he won’t answer me after asking why he didn’t let me know. How should I approach this?


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