Breaking up with your landlord’s son?

“For the last six months I’ve been dating my landlord’s son. He’d come over to fix stuff and mow the lawn, and eventually he asked me out. Lately I’ve been thinking that I want to end things.
I’m worried if I break up with him wrong, it’ll affect my apartment and make things uncomfortable when he comes by.
How can I break up and avoid as much awkwardness as possible?”
What do you think?