I’ve talked to a few Christian women who have read a particular book by her, the name of which escapes me at the momemt. Let’s just say she is very conservative in what she thinks are apropriate sex acts within marriage. As an example, she thinks oral sex is wrong; when virtually every Christian author writing on the topic of marital sex say it’s just fine and that Song of Solomon makes some very specific references to oral sex within marriage.
I would say it would have to depend also upon what a person is comfortable with. OS (I can’t even bring myself to type out the words) IMO crosses the line from love-making to lust and nastiness. To each his own is what I’m saying.