Boyfriend Ghosting??

So I’ve been dating this dude for about a year and two months, but the last time he texted me was on Tuesday in the morning. And it’s Saturday now. He goes online every now and then but still won’t text me back. But he does this all the time and normally his excuse is that he’s busy which ???? If you’re busy then you wouldn’t go online (or maybe he talks to his work buddies online. Who knows) We’re both introverts so I’m too scared to ask and he won’t say anything. I’m honestly tired of the bullshit and I might low key move on. I’m more pissed than sad right now. Some advice would be great. 😪