>It’s important that the guys are chaste as well.
Not nearly as important as women. Modern Christianity tends to endlessly try to force sons to be “pure” while ignoring or only mildly disapproving of their daughters slutting it up. That the opposite how things should be done.
Neither sex is fit for marriage after a few indescretions. You may be right about tolerance in many churches but the churches I associate with excommunicates for fornication. While it’s possible to be readmitted, your ability to find a spouse is greatly reduced.