Advice much needed

Sarah • I 💗God, Family, Friends, 🎀Pre nursing student 🎀 🎀Air Force fiancé 🎀 🦄future pediatric nurse 👩🏽‍⚕️ 🦄

Hello ladies, me and my fiancé of 10 months had split , and I went my separate way , and I started talking to a another guy , however my fiancé hit me back up and we rekindled our relationship. And I need some advice on how to tell the other guy me n my fiancé r back together without hurting his feelings.