I read your previous thread on this subject and have to agree with the people that said your wife is picking up on the fact that you are attracted to your secretary (which is obvoius from how you talk about her), therefore, i'm afraid that you can't really win here. The question is, why is your wife so insecure, have you ever had an affair in the past? Maybe you are very flirty? It has to be something, women secure in their marriages don't just suddenly go all possesive and jealous for no reason. If you genuinely do not know why your wife is like this (and I have to say, she won't be enjoying feeling like this at all, so bear that in mind too), you will just have to help her to feel more secure by giving her more attention etc and just be honest with her, if you try to "protect" her feelings by not being truthful about your day, she will think you certainly have something to hide. Good luck.