Miley Cyrus

Is it possible to download a free key logger without viruses?

I dont know much about computers but i know enough to download stuff… When ever i try to download a key logger my computers program McAfee stops it from downloading saying theres a virus. or it will let my download and install but when i try to open the program it then stops it and says theres a virus…. So i delete it and im back where i started again.

The reason why is because my GF has been going out alot lately when she never normally did. she also changes her stories about where she has been if i ask her again the next day. She has been very protective of her phone lately when she would normally leave it laying around. She also has ex BFs on her facebook. i just want to KNOW the truth but all i can do is suspect witch will get me no where when I pin something on her. I also didnt call her for two days and when she called she was mad and asked if i was cheating on her right out of the blue.