Posted about looking for this story 6 months ago with no successful answer...
Looking for a lost story that involves older teen male (16-18) who sees an older college girl (18-20 who used to babysit him) while at a party (? his birthday party) in his family's backyard. After catching up, he learns she is going on a road trip with other college girls. He has a crush on her and manages to convince her and his parents to let him join her and her friends on the road trip (ie spring break or mardi gras type of break).
She picks him up early in the morning of the trip and they all fit in her small car for the drive.
I think they went to Florida or Texas and while there, they all share a motel type of room. There's scenes where she/other college girls notices his physical attributes (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 or bar and she sees him petting and having some oral action with the girl (he met at the pool earlier) 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.
I have been searching SOL/literotica/ASSTR without luck.