confused

So I recently realized that I’m still in love with the same person for 3 years. After he moved I’ve tried to sur press my feelings throughout the years. We talked occasionally throughout the years after three years I figured I would probably not see him again. I started dating someone else a year ago and l really wanted to see where it would go, a year later I am realizing that I still have extremely strong feelings for this boy and that I’ve made a huge mistake. I’m still in a relationship but I told the other guy how much I still care for him however he said he had to move on when I got a boyfriend. I’m so torn because my feelings are still so strong for him and I want to be with him but he’s now seeing someone else