Seamus groaned, but it was good natured. He hadn't really expected to be able to keep the information from his friends. Susan and Dean both knew him too well. Which was great, when he needed a hug but couldn't bring himself to ask but was somewhat less convenient when they could tell the moment his sexual frustration abated. "Yes, I have," he admitted. The fact that it had been unexpected with no leading up dates meant it could only be one person - a fact Susan well knew.
He handed her the wine and the mixed bouquet. "I figured everyone would bring food to share, so these are just for you." Though he raised his eyes at Susan's comment. "Susan Bones, you are not a slut for anyone." Just because Susan didn't have issues that inhibited her sex life didn't mean she got to throw words like that at herself. "Though who..." His question was cut off as Susan practically pushed him onto the sofa next to Dean.
"Hey," he said, bumping his shoulder against his friend's. "I'll have a beer if you've got one."