What do you do when you like someone so much but you don't want to involve feelings?

So I met this guy like three years ago and since then I have concluded that I like him a lot. I've already had an encounter with him and we were intimate but that's stayed like that; it was only once. I still like him because of his physical and also because I think there is chemistry between us and he feels the same way. The only thing is that I don't want to involve feelings. I would like to keep talking to him and be cool with him but I would not like to get too emotional and ruin the contact we have. Like I said I really like him and he is the second guy with whom I have been intimate with. Opinions and advice will be appreciated . I need to take a decision on this