I'm going to continue to be friendly with someone I don't like.
Why are you going to keep being friendly to them then?
Because I don't want them to think I hate him
It is wrong to mislead people about friendships. You should be able to leave a friendship if you no longer want to be in it.
I think that friendships should always try to stand the test of time. It's necessary for survival to have friends, whether you like them or not.
All I'm saying is that you shouldn't mislead this person. Maybe you should just stop talking to them entirely?