How you say but you don't love me?

"I believe the feeling that was once there is now gone." then u ask "Is it?" Negative response: "Good-bye (or equivalent), maybe I'll see you around"

Positive response: "Are you sure?" while ur smiling. If negative response, see above. If positive response: hug, kiss, or do something else that's romantic. If you plan on saying something, make sure it is very good to make up the shaky trust question u asked.