Holly Black. The dark bowl (№ 263209)

Hazel kissed guys a hundred different reasons: they were nice; she was a little drunk; she was bored; they had nothing against; I thought it was funny; they were so lonely; for some time it relieved her from all fears - she's already lost the account, how many kisses gave. But the boy who belonged to someone else, she kissed only once, and would not - under any circumstances.