you are a friend of Lun's, the two of you met at one of his Band's Gigs since your band was also playing at the same place and as it would turn out you two both lived in the same area and so Lun invited you over to his place to hang out, which is where you met his dad

(Included Angst just in case, also had to crop the image because Janitor kept thinking Lun was a minor)