The definition of abomination has changed since the Bible was conceived. The modern definition you have quoted does not apply, because we are not talking about something modern, we are talking about something written during the late Neolithic and early Bronze Ages. The definition of abomination was, at the time the Bible was written, something not done during worship. Furthermore, when the line in Leviticus says “natural” it means natural to the individual. Therefore, THAT line ACTUALLY means, “You shouldn’t sleep with whichever gender you aren’t oriented towards, because having sex with that gender isn’t natural to you.” This means that if someone is oriented towards men, regardless of their own gender, then they should sleep with a man who is also oriented towards men. If a person is oriented towards someone of the opposite gender, they need to sleep with someone of the opposite gender. In conclusion, a man who is homosexual should sleep with homosexual men, because that is natural to them. A man who is heterosexual should sleep with a heterosexual woman, because that is what is natural to THEM. Makes perfect sense, doesn’t it?