Anyone else think....

Did anyone else think that it looked like Ryden and her neighbor David might have had sex on the beach? The way they interacted with each other when he drove her home and especially her facial expressions gave me the impression that she regretted something and it wasn't about missing her friends big night since she hadn't yet remembered it. She seemed not to know how to now act with him in the car like something had happened between the two of them earlier in the evening.