A short, finished list rather than an endless feed: 100 of the best relationship quotes ever written, picked out of the full relationship archive on QuoteForever. You will find Jess C Scott, Drake, Esther Hicks and Jim Rohn among them.
Read the list top to bottom, or use it as a starting point - every author name links to everything else they said, and every quote has its own page you can share or turn into an image.
If you're in a relationship and you want to make it work, you have to be a little selfless at times.
Pray that your loneliness may spur you into finding something to live for, great enough to die for.