when will it begins?

The past weeks, even the past months, I've been depressed. I don't have a clue why. I'm never feeling suicidal, like I wouldn't kill myself, but somedays, if a car came out of nowhere in my direction, I wouldn't getting out of the way. You feel me? And then, I've met him. The wonderful guy. He maked me laugh and I felt wanted. And for the first time in a long time. I felt happy. He told me he likes me. And I was happy. Until he moves away. At 7 hours from me. He said that he doesn't see the goal of us, if he is living far away. So we stopped everything. And we're strangers again. He took my happiness with him. Leaving me alone in this sorrowful life. I'm feeling sad all the time again. I mean, when will I be happy? Do you know how to fix a broken heart?