Please help! quickly!?

I'm really upset because i like my best friend. But he's in love with another girl but they just cut off contact completely because she didn't feel the same way and he needed to get over her. He still likes her and really misses her. I am trying to help him through it but he keeps saying "Stacey, you have never been in love, you have never lossed someone you loved, when you fall in love you will understand" That really put me in a mad mood by him saying that. He doens't know that i'm madly in love with him and have been for 3 and 1/2 years. We went out 3 times and broke up abut 9 months ago. But i haven't gotten over him. Right now i'm tlaking to him online. He can tell i'm upset and not myself. i told him it was true i just didn't want to talk about it right now(because i didn't know what to say even thoi do want to tlak about it) I just don't want to ruin our friendship because iknow he loves this girl and i'm scared that it will be awkward if i tell him. Even if i wasn't in love with him i have still lossed a loved one. Many for that matter. My aunt, uncle and grandpa have all died and they meant a lot. So on top of me thinking about him i'm also reminded of my grandpa, aunt and uncle. What do i tell him? he keeps asking cuz he knows i'm not myself. I just don't know what to do...