I think you should be honest with her for your protection. I mean what if she's having sex with the OM AND you? You could catch something that will put both of you at risk.

M-43 W-40
2D - 9 and 5

Emotion, yet peace.
Ignorance, yet knowledge.
Passion, yet serenity.
Chaos, yet harmony.
Death, yet a new life.

RECONCILED AND WISER