How to tell bf I was once engaged?

Taylor

Back when I was 17 I met the love of my life over the summer, he went back home to new Mexico, because that's where his dad was stationed, I stayed here, thus began our long distance relationship of 9 months during those months we were so incredibly happy that the day after he graduated high school he moved back to where I am. He wanted to join the air force like his dad so he began training and we talked about our future, he said that we would need to get married otherwise if he were to get stationed somewhere it would become almost impossible for me to follow him, or get married once he was in. I of course said I'd marry him someday, I was madly in love for Christmas that year he got me an engagement ring.

Sadly, a few months later his dad got stationed in Japan, my fiance LOVED anime, and we both sat there in each other's arms and cried when he announced a month later he was moving to Japan, and that he had to break up with me.

Now I'm with this guy I really like, it hasn't been long, but Ik one day I may have to tell him I was once engaged, and I don't know how