I definitely know how you feel! I also feel "alone" all of the time, even though I have the support of my mom and boyfriend, no matter who I'm physically with I still feel empty and alone. It's so weird. I haven't felt this way in years and it's kind of scary.. Usually I'm pretty resilient but this depression is lasting a while and I'm afraid it won't end. I can't believe this is what my life is actually like right now

We just have to keep reassuring ourselves that nothing is permanent! And if we were happy once, we can get to that place again for sure. As humans we are constantly growing and changing, so this can't be forever.