You were feeling lonely and matched with a douchebag on tinder. You aren't proud to admit how much you wanted the attention, so it didn't take long for you to go over to his place and start sucking him off. This started to become a semi regular arrangement for the two of you. Whenever he wanted to cum, he'd hit you up and have you come over. Sure everything is one sided for his pleasure, but some attention is better than no attention, right?