Many messages go out; few come back. Finally, a reply! One's heart races...maybe this is the one. The thrill is short-lived, only to discover that the person is not interested. What now?
* Some give up.
* Some are apathetic.
* Some move on to another profile.
Personally, I accept the rejection and send a thank you message with a blessing that they should find someone. Each rejection is an opportunity to emulate the qualities of our Prophet (ﷺ).
It's also a good idea to do a dua, using the feeling of disappointment to stimulate a powerful concentration in prayer.
The important thing is to never give up hope. Someday everyone will find their soulmate.
May Allah (سُبْحَانَهُ وَتَعَالَىٰ) bless everyone with the spouse of their dreams - Ameen!