No, back then it was more than likely that Ben would have had no part in something like that -- beyond being a captive audience, anyway. But even Klaus, who had his moments in asshole, wouldn't have done that. Ben simply would not have been interested. And even if he had been, it would have felt more like a reminder of just how dead he was than anything passing on fun.
This was better.
It was pretty easy telling Klaus what he liked --because Ben was enthusiastic in response -- it was impossible not to be. It wasn't like he'd ever learned to quiet down with years of experience, after all. He liked Klaus' teeth and tongue over his nipples, liked the soft feeling of kisses moving downward until Klaus got just around his belly button and then Ben tensed up and wriggled, ticklish. A funny spot to be ticklish too, he though, considering. "Nope," he said on a laugh, but then was distracted again when the Unpantsening began. He scrambled up on his elbows, offering the leverage needed to get them off with no trouble at all.
And if Klaus hadn't known he was interested before, he certainly would now.
"You next," Ben urged, eyes dark and expression rapt.