My daughtar...she has a nice friend. I like but my Wife, i think she be angry. How can I have nice friend?

My daughtar, she has a nice friend. She go to the big school together. I think she is tha 17 yar old. I like her. She look and smell nice and say nice a things to me like 'Hallo Mr' and 'How are you Mr' and she greet me when sees me. She ask if I help her and my Daughtar in the homework. My wife might get a angry if I have or want the nice girl Amy. How do I leave wife and have nice Amy in my life?