This guy and I have been DMing and he begged me to go out with him. I finally said yes and when I texted him to confirm he said he made other plans?

I’ll be honest, when I texted him I may have been unclear and it was like a 90% maybe, but even if it was a miscommunication, after I texted to confirm he said he made other plans and completely blew me off. Like he ignores my texts now. He said “let’s do next week” but so far no follow up. Guys- any suggestions/ ideas why he’s doing this?
This guy and I have been DMing and he begged me to go out with him. I finally said yes and when I texted him to confirm he said he made other plans?
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