<human>: Can you summarize the given text in a few sentences?

I'm 27F from a small Southern town (I live in a big city now, though) and every single one of my friends is married, engaged or in a long-term relationship. 

For me, my relationship of 4 years with a person I thought I wanted to spend my life with (28M) ended last month. It was the right decision but it still hurts. It's so hard to look around and see my friends in loving and happy relationships, while I'm here nursing my broken heart. I feel far too old for this - and furthermore, I feel too old to meet anyone new. I feel like I'm being left behind. I'm envious of the stability they're enjoying as they start their families, and I feel like there's something wrong with me because I haven't been able to make it work yet with anyone.

Not sure why I'm posting here. Just to vent, I guess.
<bot>: How do I cope with being the last single one left? How do I have hope that there could still be someone out there for me?