Christian:

He nodded and drove off into the night after dropping you off in front of the dorm where they both stayed. 

Jason:

Hearing a knock at the door. "Just a second. Hey you! Come in. This is unexpected. Most welcome but..." He shakes his head and wraps his arms around your waist. Brings you close for a kiss. "I missed you." Lifting a hand to stroke your hair lovingly. Jason gazes into your eyes lovingly then hold you closely. He breaks his embrace and offers his bed to sit on.

"So what is a nice girl like you doing in a room like this?" He raised an eye brow to your words. "Well I think for a fourth it would be more for you and Chris. But I think affectionate and an adventurous streak would be good for us. Chris is right with the freshmen part. I don't think the seniors would still have the wild side to make this work. She would have to be a little curvy in the right places."