It's the end of the first act, I've met the villain, I'm not impressed. I hop on a dating site, find a travel companion to help me defeat the bad guy. There's some tension between us, the villain is scared. Villain Weekly says deuteragonists with sexual tension are the most common cause of villian deaths. It's right. We kiss while standing over their corpse in their burning lair.
Years later, you tell me you're leaving me for Steve. It's the villain's son. I've found a new villain. I get back on the dating site.