Crush on a lady until I realised she is married!!!

I joined a company this year , and since day 1 there is one lady I have been seeing. She is reporting to a different person, but everyday I see her. Gradually I started developing feelings for her. Until one fine day, I saw her husband dropping her to office. I was dumbstruck. Isn't it crazy , I started loving a lady who is married. I try to avoid eye contact with her nowadays!!!