"Come on, Star! It's ok!"
Moon was trying very hard to coax her daughter into it. She was still pretty timid, though, despite the fact that it wouldn't be shocking to anyone.
"You know he already likes you. And he dumped Jackie already. She even said it would be fine if you two got together!"
That part was true. Marco and Jackie had broken up. The break up was mutual, although Marco had been a little tense about it (as he was about everything). Star and Marco had still been platonic best friends, even after Song Day. Through some miracle, both had managed to stay close friends with Jackie. And Star appreciated that she could now get a little "girl time" with Jackie, since before, every time she was with them, she was with Marco.
And it was also true what Moon said. Jackie had actually told Star that she thought she and Marco would make a cute couple. She even went so far as to say that if Star wanted to ask him out, she would be her wing-woman. Star had been shocked by this. Why would Jackie be so supportive of them?
The first thing was also true. While Star was a little hazy on Marco's feelings about her romantically, she knew full well that he liked her. He had kept living with her, doing fun and crazy things, snuggling her on Friendship Thursdays, etc., even after they defeated Toffee. He had acted the same as he always did. And with the exception of the first day they met, he had always liked Star.
"What do you say, Star?" River chimed in. "Mewni does need a king, and he would be perfect for the role."
Another truth, thought Star. A truth she didn't want to think about, but a truth nonetheless. She knew that she was going to be queen someday. And she knew that every queen of Mewni had to have a husband and a daughter to carry on the family lineage.
Her father was right. Marco would be perfect for the role. He loved the idea of being a king. His neat, straight-laced personality perfectly complemented Star's reckless abandon. And he was perfectly suited to the role of stay-at-home dad.
Star contemplated these things. She knew Marco would be the perfect future husband for her. She was already in love with him, he knew it, and he still didn't shoot her down. He would be perfect at being king. He loved her enough to do anything for her. Only one thing was missing and she had the chance to make it.
Star looked over at Marco, who was in another room playing Sorry against Pony Head, Janna, and Jackie. He seemed... at peace. He looked like he had finally been freed from all of the pressures of life, and now he could just relax with his friends. Just looking at him brought a little smile to Star's face.
Star sat and thought about it. She thought long and hard. She looked up at her parents, then back at Marco. And finally, she knew what to do.