Guys associate female for Threesome in BDSM

Before the guys played the usual sex with his girlfriend and everything was great, but later she expressed the desire to try intercourse in a format of BDSM. We had the guys whipped the wench not only members, but also with a belt for such desires, because now they have to tie a lover before fuck. So labour less with the same impact... and where is the profit for kids?! Now, many local experts say that it is too pale and this is not real BDSM, but first, just lose your virginity and that's all for now.