u/Brilliant_Match8281

So i'm trying to find this book that i've previously read last year but for the life of me cant remember the title. Its an arranged marriage trope the FL is a virgin and refused to let the ML take her virginity away so she sneaked(?) into a masked party where she had s*x w a guy she knew but was actually the ML (she didnt know then) I cant remember much but maybe the ending he wore the mask and showed it to her? Unfortunately this was the only thing i could remember. Do help me book fairies!! <3