פירוש על ברכות 6:3

There is no suspicion also- As we learned in a Mishna(Kiddushin 80b): but not with a woman and two men.

With two immoral- And it was taught there only with two who are known to be innocent(not immoral).

According to Mishnah Kiddushin iv. 12, a woman may be accompanied by two men.