is your sense of loneliness (if you are lonely) heightened when you see what they share?
How do cope (if you ARE coping) with a sense of isolation, of not having a significant other?
I know some single persons who are very happy as they are. Likewise, I know some miserable couples. We all know what the apostle Paul said on this subject so I'll skip that!
Your thoughts and personal experience are welcome, whether YOU are a couple or you are single.