I keep coming back to 'Cruel Summer' by Morgan Leigh for this exact vibe. It's structured around a summer share house where the classic party game escalates week by week. The initial dares are silly, but as the friend group's dynamics fray, the questions get sharper and the challenges more revealing. The protagonist and her longtime crush use the game as a barely-veiled excuse to probe each other's boundaries, and the tension isn't just sexual—it's this fragile, painful hope that the other person feels the same depth.
The 'truth' rounds are where the romantic heart really beats. Characters are forced to admit past jealousies or confess why certain memories stuck with them. It makes the eventual physical payoff feel earned, not just a random hookup. The author has a knack for writing those breathless moments right after a dare is completed, where everyone's just staring, trying to parse what it all means. I reread the lake scene at least once a month; the emotional vulnerability there is almost sharper than the spice.