The question is this: If you are wrong on some of this, are you willing to unlearn your error?
Christ had some strong pronouncements regarding adding to or taking away from true doctrine. That should make anyone claiming to be a christian take notice and beware of what they teach.
First thing to know is that there are no new sexual ethics introduced into the new testament. All morality in the new testament has its basis in the old testament.
Another fact to keep in mind is that the "rules" regarding sexual behavior didn't originate within the false premise that sexual activity is inherently evil and can only be made acceptable within a Roman Catholic sanctioned marriage. The truth of the matter is that there are other not-so-surprising reasons that the particular relations are regulated. For example, if a girl is betrothed, she belongs to the man to whom she is betrothed. If another man were to come along and sleep with her, then the transgression has its origin not in the false premise that sex is evil but rather that his rights to her were being violated.
When God gave directives in the book of Leviticus regarding men lying with men, there was no corresponding condemnation of women lying with women. In fact, there is no clear teaching ng against what we might call lesbianism in the whole bible.
Here is a good article explaining what is meant in Romans 1:26-27. It clearly shows that the women had stopped having procreative vaginal sex and instead engaged in anal sex.
We always think SHAME ON YOU man if you like looking at women in skimpy clothing. But guess what? That is how man is made. It is natural to like the shape of a woman. Wide hips, ample breasts and color in the cheeks and lips means she is healthy and fertile. And God has given the command to be fruitful and multiply and there is nothing wrong with that.
And there is nothing wrong with a man having several women. So Tiger Woods did nothing wrong.
Romans 1:27 says that the women being talked about were "burning in their lust
one toward another" Two women are incapable of having anal sex with their bodies, and there was only the mention of the wrong use of their bodies.
Further more, look at verse 29: It tells about that same group mentioned in 26-28 as being filled with unrighteousnes, wickedness,
fornication, coveteousness, and more. And there was no mention of man being held accountable, while women are free to just do as they wish. No mention of man being allowed to just go ahead and sleep with who he wants, despite the VOWS made before a HOLY GOD. In fact, the Word makes it clear that God is without partiality, that He is no respecter of persons.
How can a woman "marry" another woman (let alone, just have sex with her) and, at the same time, obey what God says about fornication? How can she have sex with another woman, "in the name of the Lord Jesus, giving thanks to God and the Father by Him" (Colossians 3:23)?
Nothing wrong with "having" several women? Do you really HAVE them, if you're only USING them? When Romans 5:33 commands each man to love his own wife as his own flesh, why was there no mention of other wives? Why did God not command each man to leave his father and mother and cleave to his wives? Why did He just mention that the TWO shall become one flesh?
Hebrews 13: 4--Marriage [is] honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge.
Leviticus 18:20--Moreover thou shalt not lie carnally with thy neighbour's wife, to defile thyself with her.