I was actually in a very similar situation all last year, and the beginning of this year. Think of me being in your shoes, I was feeling the exact same way you're feeling about this guy. I wanted to tell her, so I did.
I think it did more harm than good, however. We would keep going on these "on and off" phases, talking and not talking, hanging out and not hanging out for a while... She broke up with her boyfriend, but it was pretty traumatizing for her. But in the end, I ended up hurting her, and our once friendship was lost, and probably is for the rest of my life.
It's different though because you're a girl feeling this way about a guy. Me, being a guy, would try to work things out with you and see if you were interested. But it seems like he has no initiative, or motivation to start things back up with you... I guess you can tell him how you're feeling.
But whatever you decide to do, don't do what I did and ruin a friendship, you'll regret for the rest of your life. I hope I have helped you out in some sort of way, and wish you the best of luck! :).
Walk away. You'll be happier for it. It's abrupt, I know, but it sounds like you already know what you need to do, you just need that final push.
Cut off contact and go spoil yourself, you'll be better off.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.