Will I be alone forever...

I've been in 2 serious relationships in my life, 1 when I was 16-22 for 6 years, I loved this girl with all my heart, I did everything with her, we built together and supported each other, our families liked each other, and everyone thought we were going to get married, I was actually planning on proposing very soon, our lives were on track and it was super healthy, so it seemed.

I woke up and received a text message from her, saying that she didn't seem happy, and wanted to end things over text, I begged her to stay, I begged her to meet in person, so we could talk and sort all this out.. I felt hurt, broken and confused, I started to drink heavily and lost my job, I was in such a bad space, my head felt numb my body felt weak and I couldn't control myself, so I laid in bed day after day wishing this never happened, I found out after though, through her family, that she in fact cheated on me prior to leaving me and I guess fell in love with someone else, but after so long why.... why would that happen, how could someone throw away 6 years like that over text message. I couldn't believe it.

Fast forward 8 months, and I'm still depressed, but I'm slowly going to work again, I've cut the drinking out, my friends and family were so so so supportive of me, and loved me, yeah deep down I was alone though, i never had her to call or text, I couldn't hear her laugh or see her smile. She was gone, completely gone..