Unfortunately for the two teenagers getting touchy-feely in the basement, Angel had chosen that moment to seek them out in order to tell them that he and Cordelia had returned with Claire. He had been expecting to find them yelling at one each other, perhaps one of them in the corner with something bleeding or broken, but not...not what he found when he reached the bottom of the stairs.
"HEY!" He shouted out of instinct, coming to stand near the two hormonal teens who he'd thought couldn't stand one another, folding his hands over his chest, waiting for them to part.