How do you know if someone is your soulmate?

🌼D🌼

My ex and I broke up a year ago this month and I still cannot stop thinking about him. We only dated for 8 months and broke up the first time for college and the distance. We ended up getting back together but broke up again because the distance made us angry toward each other and he started to put an emotional wall up. I wish I could get him out of my head but I can’t. He was my best friend and my first everything. I want to talk to him and get closure but I’m pretty sure he hates me now.