Most Helpful Guy
You're in lala land0
Most Helpful Girl
If I was you, I would message him and tell him that you do still have feelings for him, and he clearly has feelings for you, and suggest starting the relationship afresh. You can go on dates and spend quality time together, and avoid too much physical contact or saying things like i love you or miss you.
By doing this you allow yourself to learn more about how you both feel and it will give a better insight to whether a relationship is what you both want or if one or both of you just still have a raging passion for the other but mistake it for wanting to be with them.
I hope this helps :)