The thought of him leaving makes me suicidal

[sleepygirl]

Hey there,
I'm in my second year of university, and i met my boyfriend in freshers (literally the night i got here haha)
We've been together ever since, and its great. We even live together with 4 other people this year
however, my anxiety and depression goes crazy when i think about next year.. as he has a year in america.

I've tried all the things to put it out of my mind, and enjoy the time now- but i just can't as i'm so fixated on it.
I feel like he's the only person who likes me at uni, and he's going to be so far away and with a huge time difference,

everytime i try to talk to him about it, he just dismisses it now, saying that it will be fine. But he doesn't know how bad i'm going to get without him here. My previous times when i've had anxiety and feelings of alone-ness has lead to me turning to bulimia in the past.

God, i'm just so frightened about it!
any advice?