TASK: create a scenario that you think that will happen when Serena or Ash tell each other how they feel about them.
First Ash would be quite oblivious to her charm. She would hope, Ash will eventually notice by himself. After some time Serena finally realizes, her strategy won't work. After that comes to her mind, that there's no other way, but to tell him directly. Of course she will try many times, but something still interuptes her (TR, Clemont, Bonnie, missing Dedenne, new trainer wanting a battle with Ash. However during one of the beautiful evenings, Serena finally tell Ash:
Serena: "I like you"
Ash: "I like you too. We're friends after all".
Serena: "No Ash. I don't like you like a friend. After our first met you catched my attention. When Premier ask you to go with her, I thought she's talking about date. I know that was stupid of me. But after that I realized, you're much more to me than just a friend, like Bonnie or Clemont. So I can tell you, I like you, as someone very special to me".
Ash after minute of silence finally tells: "Serena. The thing is, I like you the way I never liked anyone else before. I hope you understand. That's new to me. But after what you've sad I guess we feel in similar way, so I can tell you too, that I like you like someone special".