Because, let’s face it, you only communicate with females online, keep a screenshot of every single interaction you have with the girl of your choice.
Save these pictures, along with any she posts of herself (protip: just search GPOYW on her blog), in a folder on your desktop with her name on it. Don’t even try to hide it, and be sure to also save pics with her and her real boyfriend, you can always just burn him out.
Look through said folder when you want to know what real love feels like.