Just as with the book comment then—can’t believe you’ve done it in reality meaning always knew you would. That kind of misunderstanding. The one Ollie hadn’t taken any offence at because at that time in their relationship he’d thought they actually had one of those—a relationship—and he’d still quite liked Tom Collins. Now, being pursued through the hideous killing shed—and didn’t killing shed totally add the necessary ambience to this little tableau?—he wasn’t even slightly fond of Tom Collins, and so he was refusing to see that I don’t want to be a couple with you could have any other interpretation at all. The truly humiliating part came when Ollie managed to make it outside. It was now dark and very cold, and he realised he’d forgotten that he had, in fact, arrived with Tom in Tom’s van—or, more to the point, if he wanted to leave, Tom would have to drive him. Or he’d have to walk. That wasn’t entirely ruled out of Ollie’s rapidly considered options.
