My exact thoughts... it’s making me sad thinking about it tbh
Well, you're almost correct.
Still, after more than a year, I can't still find anywhere that suggests that he's going to suicide. I remember that he mentioned that he'll at least wait for another 4 years for Zhishu to come back (like what Zhishu did for him) and asking if what if he can't wait anymore and what should he do after that. Is this the part? Because I actually interpreted it as if he's asking if he can love another person after that time, as I pretty much hated all of Wenxu's being from the very start of the manhua/novel (which may have clouded my judgement for that kinda open ending) for him.
I have a feeling that the main seme is going to suicide.. oh man.