As you may have guessed, Ramona didn't actually date Sunshine. What she did do was destroy little Sunshine's heart.
Please see the fullview so that you can read the text! It's really the story I'm proud of.
I'd like to add a note here to anyone who hasn't read the comics: The three guys are the young versions of Matthew Patel, Todd Ingram, and Lucas Lee. They're Ramona's first three exes. She's thinking about how much better it would be to get a dog than another overly disappointing boyfriend. I hope that clears things up for anyone who didn't understand what they had to do with the story.