Looking for a lost story that involves older teen male (16-18) who convinces an older college girl (18-20 who used to babysit him) while at a party in his family's backyard to allow him to join her and her friends on a road trip (ie spring break or mardi gras type of break).
I think they went to Florida or Texas and while there, all have to share a room. There's scenes where she notices his physical changes (ie bathroom changing/swimsuits) and a pool scene where they put sunscreen/oil/sunblock on each other which turns both of them on and then she gets a bit jealous when he meets a girl closer to his age in the pool.
Later, they go dancing at a night club and she sees him petting and some oral action with the younger pool girl behind the dance club and realizes that she is jealous of him and wants to become involved with him. The finale has them getting involved with each other back at the hotel room.
Overall, it's a story where she reluctantly and slowly comes to realize that this slightly younger guy is the one for her and how they end up together.
Thanks for any assistance in figuring out this story.