I have an idea for you!!!
Hmm..
How about...
Sam and Colby are dating (hear me out ok) and they share a twitter/tumblr account. One day Sam posts about his crush on Colby, on their account, and doesn't realize he forgot to change accounts to a private one until Colby goes up to him.
Colby's oblivious to Sam having a crush on him and tries to help him confess to his love, without knowing it's him.
Boom ✨