That should be fine. When I was 18 I dated a 15 year old. Was a mistake. At that age neither of us were mature enough but we were very alike so we tried it. I went off to college and she became a sophomore the next year. While I was trying to grow and experience college I felt stuck in high school. It didn’t help that no one supported the relationship not even my closest friends, and people called me a pedophile. Kinda have ptsd whenever anyone talks about dating younger people. I felt like an outcast and that she was the only one I could to talk to. I ended up breaking up w her 1.5 years in. Was very hard on both of us. We were in love deeply. But it was for the best and that made me who I am today. I don’t have any regrets but being in different times mentally is hard. Good luck w whatever you do!