Schedule a time for something - whatever activity that will get you near some girls. Make it like an appointment. Sitting at your computer isn't living and it's not getting you out of your loneliness. If anything, it's making it worse. Stop it. Replace it.
As for meeting girls, if you want to meet a caring, accepting girl (this is what you want over hotness - don't be fooled), you might volunteer someplace where caring girls also volunteer, like a homeless shelter, animal shelter, kids' center, a hospital or old folks home, save an extinct species, save a tree, etc...; something you'd also be interested in as well.
Volunteering and helping others is a great way to beat the blues as well as meeting some of the nicest people in the world.
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Life isn't about waiting for the storm to pass; it's about learning to dance in the rain.