If you catch your husband in his office with a co-worker and she was not wearing a bra and they both were acting strange could he be cheating?
If she's naked on top then something was up. If she was wearing
a sweater or blouse without a bra underneath then you can't accuse
your husband. Your husband must have given you some excuse if he
denied that anything was going on. Please post again under this
answer and give us a little more information so we can give you the
best advice possible.