Board Thread:Questions and Answers/@comment-77.111.246.40-20200110041158/@comment-29325824-20200219122624

Actually, aside from specific exceptions such as the Unicorn, it's likely many mamono have casual sex before marriage. Mostly because they're desperate to have their fix and take a man that's not husband material.

See, even for the species that are not picky when it comes to men, Mamono still desire a husband they're fully compatible with, someone who truly loves them back. I'm sure they'd like to marry the first man they see and have sex with, but reality doesn't always comply with anyone's wishes.