[FANFIC] [Vain x Reader] Summer Flings & Flirts [NSFW] [M4F] [M4M] [Summer] [Pool Party] [Party S*x] [Lifeguard Vain] [Swimsuits] [Whiskey Kisses] [Temperature Play] [N*pple Worship] [Exhibition] [Instant Attraction] [Mutual Flirting] [Hook Up S*x] [Desperate] [Deep slow thrusts] [Strength] [Hands around my neck, Sweetheart] [Hold on tight] [Standing S*x] [All your weight dropping down on my c*ck] [Self insert] [8000+ Word Count]