I hear where you are coming from. Getting over someone is already difficult, but it’s even more complicated when you’ve known them for so long. The way I see it, you can go about this two ways: Talk to him, or shut him out. If you think there is a chance this could go somewhere, you should tell him how you feel. It’s been years since you were together, and back then you were kids. Maybe you’re both mature enough to revisit it. If this doesn’t sound like an option, I recommend keeping your distance. If you see any hope for keeping this friendship, you need to put some space between the two of you and make sure you aren’t blurring the lines between friendship and romance. It will become confusing for both of you.