I agree with flowmom. You have to determine for sure. THEN you set boundaries that she has to break off any contact and be transparent, because you will not tolerate that in your marriage.

If you have proof and she refuses to respect your boundary, then you tell her that she will need to get her own place.

Otherwise any attempt to improve your marriage will be a waste of your time and will cause extreme distress and disappointment for you.

WAW Using God
Me-43
W-40
M-14
S-11
S-9
D-7
EABomb 5/09
Separated 12/09