In this case, yes, being upfront would have been the right thing to do. Clearly. I dont know how you're confused... The options are:
1. Just tell him you aren't gay while expressing you still want to be friends. This gives Heesu closure and if Heesu's willing they can still be friends. If being around Chanyoung knowing they won't ever be together hurts, it should be Heesu's choice on whether or not to leave. Right now he doesn't know he already been rejected so he has a tiny bit of hope that keeps him next to Chanyoung withstanding all the pain Chanyoung has put him through.
Or 2. Do what Chanyoung did and instead of confronting Heesu's feelings, go out of your way to hurt him IN HOPES that he'll just give up. The issue with this option is that he has seen 1st hand how strong Heesu's feelings are, this isn't just a crush, Heesu is fully aware Chanyoung is straight and has stayed alongside him anyways. If it was a trivial thing, Heesu would've gave up as soon as he found out Chanyoung was straight. In other words, he doesn't know how long he'd have had to hurt Heesu and drag him along before Heesu gave up, IF he ever did without that clear rejection. He had been planning to hurt him as long as it took, this is literally the definition of leading someone on.
Everything about what Chanyoung decided to do was wrong, he literally went out of his way to show his girlfriends off to Heesu and ignore him when he got them to hurt him. He said mean things on purpose to hurt him too. A real friend wouldn't want to hurt you, let alone hurt your most delicate feelings like this.
Is it just me that who cannot grasp which side should I be in?
About Chanyoung...
Ideally???? it is better for him to tell Heesu about it...? Cannot grasp with idea
In reality, does saying things upright is the best thing to do???? Or his ways are better???
But I knew what Chanyoung is pulling is also a mean one and not good at all....
My mind is totally in chaos right now....