1 Corinthians 7
1 Now concerning the things whereof ye wrote unto me: It is good for a man not to touch a woman.
2 Nevertheless, to avoid fornication, let every man have his own wife, and let every woman have her own husband.
1peri de wn egrayate, kalon anqrwpw gunaikoV mh aptesqai:
2dia de taV porneiaV ekastoV thn eautou gunaika ecetw, kai ekasth ton idion andra ecetw.
The key is mh aptesqai. This is clearly and plainly a negative - mh doesn't just mean "not" but "never, ever"! I would translate aptesqai as "join to" or "cleave to" because it's more than just "touch", but that's subject to debate. The negative is NOT.
So this guy is not only a heretic loon, he's a dishonest translator, too. (But we all knew that anyhow, didn't we?)
To add one other comment: there is nothing in the original Greek about "some of you say that . . . " Paul is clearly and plainly saying exactly what the King James version says - and saying it himself, not repeating what somebody else said. "Wife" and "husband" are not in the original - what it says is, "let each cleave to a woman, and let every woman cleave to a man." But "cleave" is generally recognized as a close and permanent relationship - it is in the marriage service.