Thank you for playing Love Hues, and for taking the time to leave feedback! It really does mean a lot to me. :) I'm happy you enjoyed the game.
That does sound like a potential bug and I'll be happy to fix it. If you'd like me to investigate it further, please feel free to reply or email me with details of the in-game choices you made - if not, that's okay and I'll dig into the script to see what the cause was.
I will add that there is a specific in-game branch that locks you into a platonic path with James only, with no romantic option. It occurs when he calls in Chapter 6, you pick up, and Skyler notes that they feel that he's struggling too much with defining friendship vs. romance. He'll only be available platonically for that branch specifically onward. You'll also know if you've reached this branch if you meet Allie in the cafeteria in Chapter 3, where James mentions the exhibition. If this series of events didn't occur and you still didn't get a chance to play his romantic path, that would be a bug that needs fixing.
However, the mention of dating during the platonic path is a definitive error and I'll try to narrow that down and patch it out as soon as possible. Thank you again for sharing and stay safe!