explore the world around you, commune with it and relax/take in the sights.
You may think you know the whole area around where you live but it can surprise you.
where my parents live is a huge rolling hill/swampland filled with annoying small bushes and plants that make the area thick and hard to move through. I decided to conquer a hard task one day. I could see a section of ever green trees that covered at least a square mile, about a mile back from my backyard. I had to cross an abandoned beaver damn to reach the edge and then nimbly cross the maze of foot holds across meter deep sections of swamp, using rotten trees that regularly collapsed under their own weight as supports.
in the end I made it and found gold. half a kilometer into the thick evergreen wall and deep swamp floor, I found the moss field. For about 1.5 kilometers in each direction there were tall ever green's whose lower branches had died. The upper branches kept out much of the sunlight and allowed moss to grow thick. very thick. There was about a foot to two feet thick layer of moss over the swampy terrain and it was spring green.
The area was nearly silent. I navigated to a protruding boulder and sat. I listened and smelled and felt the serenity of this place and deemed it a holy place untouched by man.
Every area has a treasure such as this, even city centers. One must simply be ready to take the journey needed to find it.
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also, don't dump her man, what are you thinking? talk to her when you can but realize you have time between your time with her and do something else. go exploring, like I did.
I don't like the outdoors when I think about it. It's the natural equivalent to the internet, just duller.
Anyhoo, my advice to the op here is to assess the situation: would you ever like to live with this girl somewhere? If so, could you picture it to be a good experience?
If yes to both, then ok, go for it. Be with her. whatever.
But get something to do in the meantime. The time when you are not talking to her over the internet. Just as the other people here said.
Not necessarily outside, though you have to be out there...sometime.
But just do something, man. start painting or drawing, coding, singing...write fanfiction , or erotica...anything, just something!
This depression-not-going-anywhere thing gets you nowhere, and ending it all will just inconvenience others to the max.
Do something positive.