<human>: Could you distill the essence of the text into 1-3 sentences?

I know this probably seems silly compared to most other posts on this sub, but my whole life is literally leaving me and I don't know how to handle it. I've been sinking into depression more all week every time I think about it.

My life as i know it is ending and I'm just not ready. I am so in love with my girlfriend, we have been dating for over a year but were friends through most of high school and now i won't be able to see her everyday at school. We're not breaking up, but distance is so hard, and shes a very busy person so even in this last week before she leaves it feels as though i've barely gotten to see her. I can't sleep at night. I just want my life with her to stay the same, nothing in the world has ever been able to make me happy like she can.

And my best friend, one of the only ones I've held onto since grade school, is leaving as well. He and my girlfriend were basically the only two friends i still even have. But even this friend hasn't been talking to me much recently and i've only seen him a couple short times. He has a new girlfriend, so he's been busy and i understand and i'm truly happy for him, but he's put her before me a lot more recently and it just hurts because i know he'll be gone soon and i'll be all alone.

Like i said, i know this seems silly and i'm young at all, but this is the most depressed i've ever been in my life and i just thought maybe some redditors with similar experiences might be able to share some words with me. Even if nobody reads this, writing or typing things down has always helped me vent a little. I just don't know how to cope with the only two people (other than family) left in my life leaving. I hope they have amazing times and great experiences, but i don't want to lose the girlfriend and friend that i know and love.
<bot>: Girlfriend and best friend are leaving for college and i don't know how to deal with the depression of being without them, as they were my only real friends left.