Here are some poignant and sad sentences:
1.I once loved someone deeply, but now I can only hide it in my heart and bless it silently.
2.Our love used to be so beautiful, but now it is like broken glass, and there is no going back.
3.I used to think we could make it to the end, but now I realize that we are just passers-by in each other's lives.
4.I used to think I could have you forever, but now I can only silently wish you happiness.
5.Our love used to be so sweet, but now it is only bitterness and heartache.
6.I used to think we could face everything together, but now we realize that we are just passers-by in each other's lives.
7.I used to think we could grow old together, but now I realize that we are just an episode in each other's lives.
8.I once loved you deeply, but now I can only silently wish you happiness.
9.Our love used to be so good, but now there are only memories and regrets left.
10.I used to think we could create the future together, but now we realize that we are just a part of each other's lives.