It a healthy relationship even in friendships no one should be the boss of the other.
If you tell him how you feel and what you think, and if he stops talking to you, that would show you what he is not willing to do. In a way, you would want some sort of a reaction even if it is not the one you expect. That would allow you to move on with your healing and with your life.
The relationship can be given another try only if the two of you are very clear about what you want from each other (realistically) The two of you would have to remain committed. Otherwise, it would be very hard for this to work out with his and your schedules. If you think that 6 months are not too long to wait and see what happens, then the two of you can decide on that.
If you do not tell him of your expectations and he of his, there would be nothing to base your plan on. On the other hand, if you feel that you can move on (even though he's your first love) then you may explore that idea.