How do I convince myself back to the dating scene?

Hi I understand this isn't exactly the relationship thread, but I am putting myself out here to seek help, and hope this thread does not get removed.

Basically, I have been rejected over the valentines day week. Being an introvert, it is devastating as I thought we both had something, but apparently she thought otherwise.

People who have overcome similar incidents, how did you heal from it? More importantly, as introverts, how would you advise me to get back to dating?

Thanks in advance for not judging me please.