Just an idea that popped into my head, mostly about the thoughts of the lovers in the White Day episode, episodes 608-609, when they receive their White Day gifts. They're just shot stories though.
Chapter 1: Shinichi and Ran (Won't go into details since it was showed.)
Conan looked, relieved, at Ran's smile as she sucked the cough drops in her mouth. Well, I wished I could have gotten her something better considering I already knew that she had already recovered. But then again, when I last talked to her, it was during the time that she still had that cold so it won't make sense as to how Shinichi knew that she had already recovered. I swear, I must act less detective-like around her. She picks up the noticing-even-the-slightest-detail trait from me pretty fast.
"Conan-kun, you want some? They're sweet!"
"Eh? Ah… M-Mm!" He nodded and took one from Ran. I guess one wouldn't hurt. He thought as he sucked the candy-like cough drop. Hey, she's right! It is sweet! Maybe I should beg her for more later.
I'm so happy! Shinichi received my feelings! And he even returned them! But this case that he's working on must be hard, if it takes this long for him to solve it. I wonder when will he be back for good? Shinichi… At least, I know that I'll wait for eternity for you, Shinichi.
That's it for the Shinichi and Ran's case and in case you're wondering, the last part was Ran's thoughts.