How Do I End It

I do not want my SO any longer. He has lived with me four years. He has hurt my feelings a few times with lying, a little online cheating. I have seen so many online messages from other women, all of a sexual nature. One day last fall I saw another one. I intended to come home that night and send him on. I decided to forgive and try to work on the relationship, but I just can't get back what I had felt for him. So what I need to know is how to end it. I don't want to be cruel, but I am not sure I can handle him still being here once I tell him I am done. I just want him to pack his bag, go and come back in a few days to get the rest. I will pack his things and put them on the porch. Does that sound too evil. I know he does not have any savings, even the car he drives is mine. Living with him is driving me crazy, every time I see him texting, I wonder who he is really talking to. I can't stand it.