<human>: Last night my friend, let's call him Geoff, and I were at a party in a local bar. Great fun, lots of people. There is this girl there whom Geoff had met before (some cooking club or something) and they spend the night talking.

 In my eyes it was clearly platonic. They were at an arms length the entire night, only talking, no dancing together, no touching. 

Near the end of the night I strike up a conversation with her. She was nice but I wasn't that into her. We ended up talking for about twenty minutes, half an hour tops. Geoff just got up and left. No goodbyes or anything. Ten minutes later I get a text saying I shouldn't contact him for a while.

I really don't know what I should do next. Am I in the wrong here? I hurt his feelings, so some kind of apology seems appropriate, but how can I do that if he doesn't want me to contact him? And can I actually sincerely apologize if I'm unconvinced I did something wrong?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Platonically talked to a girl my friend likes. Friend calls off friendship, goes no-contact. Was I wrong? Can I fix this?