An Israelite man could marry such a
woman, but only if she took certain measures.
So he could have sex with her but not have to marry her if she didn't take certain measures..........
Concerning the steps such a woman was required to take, the Bible states: “She
must now shave her head and attend to her nails, and remove the mantle of
her captivity from off her and dwell in your house and weep for her father and
her mother a whole lunar month; and after that you should have relations with
her, and you must take possession of her as your bride, and she must become
your wife.”—Deuteronomy 21:12, 13.
And yes, for sure he waited a month before having sex with her.
Just another WT excuse like the one they have for rapists. Women are supposed to remember that the rapists have feelings too