Getting back with my ex i dated for two years?

Recently i have been talking to my ex and he said he would really like to work things out with me. We broke up almost a year ago but before that, we were going on 3 years of being together.

He's the only guy I've ever truly loved and i still do have a thing for him. He told me i was his soulmate about two days ago and I've been thinking about getting back together. It was one of my best relationships. Even though we're still pretty young (he's turning 19 and im about to be 18) i would really like to give it another shot. Should i???