#but unless Hairo literally thinks to himself “wow I am homosexual” or “hey I'd like some gay sex” Saiki will never know his orientation lol

[no-psi-nan]

If you're lying to yourself or believe in a lie, he can't tell. All he can hear is whatever thoughts are actively going through your head right that second.

Ex. Akechi specifically thinks so many things so quickly that Saiki can't parse through all of it fast enough unless he REALLY makes an effort, so Akechi is able to hide the fact that he has solid evidence against Saiki despite being in school with him every day.

There's totally potential for a "I think Coolsvillle sucks" moment as well if Saiki only catches part of the thought.

Similarly if you're daydreaming in a way that's not obviously fake, he might think it's a real memory too.

Lots of different ways to go about misinforming Saiki lol!

could you reasonably lie to saiki through telepathy?? like could you bullshit so hard in your own brain he’d think your serious since like its your thoughts