That's the problem.
It's odd that being in a successful programme about being yourself has put him in exactly the opposite situation.
But you can guarantee his agent and the production company want him to keep it vague.
People can't seem to tell the difference between the actor and the character any more.
Him being a young straight guy out with his girlfriend will get a horrible backlash. He already gets accused of queerbaiting, plus he's getting the pin up treatment, those young girls and gays will be put off if he publicly has a girlfriend.
They do it to all the young lads on X Factor too. As soon as they're signed, they don't have a girlfriend or boyfriend any more, because it damages the marketability.
Some people just really can't accept that.
It's got to be worse when you're now the poster boy for a whole generation of queer's... and you're not queer.
I really feel for him.
In truth, since the beginning of Hollywood there have always been rabid fans unable or unwilling to accept the reality that actors aren't actually the characters they portray on screen > and this will never change!
Actors keeping their sexuality, politics, romantic dating life etc...PRIVATE... is also a smart career decision since the less is known about them, the more diverse range of roles they'll be able to audition for and portray effectively on screen > Studios, producers, directors, writers would also largely agree because it keeps the marketing / promo interviews focus on the on-screen MATERIAL and not the actor's off-screen personal life!
Kit's sexuality is entirely his own business > he owes the public zero answers > but people are still entitled to ask their questions and voice their opinions and this will never change, despite how many of us believe they should just keep their mouths shut and mind their own business!
Here's the major challenge for Kit though > he's playing a beloved bi/gay character in a global smash-hit LGBTQ series at a time when the whole "casting gay actors to play gay roles" continues to heat up! And he'll be playing this role for at least the next few years > so media/fan questions about his sexuality definitely won't be going away, and likely only intensifying when each new Heartstopper season drops. So while Kit can stick to his guns and keep his sexuality strictly private, which is his absolute right, the answer will likely become obvious at some point as the tabloid media and obtrusive fans armed with camera phones follow him around in his everyday off-set public life. And not eventually confirming his sexuality also means that his family, friends, co-workers, and romantic dating partners will ALL have to follow the same no-comment posture, which is rather unrealistic and frankly exhausting from a longer-term view!