ISB ~ 1 Corinthians 7 v1

Now concerning:A recurrent expression found throughout the letter (7:25; 8:1; 12:1; 16:1). Paul uses it to address specific questions posed to him in a previous (now lost) letter from the Corinthians.

not to touch a woman:A euphemism meaning, “not to have sexual relations”. It may have been a motto of certain Corinthians (ascetics) who frowned upon marriage and the physical pleasures that accompany it (1 Tim 4:13). Paul treats the slogan as a half-truth that is ultimately misleading: Celibacy is good, but it does not nullify the goodness of marriage or the propriety of sexual relations within marriage.