I don't know who you are but thank u for picking this one up, I've already read it in spanish and is one of my favorites omegaverse yaoi so far, I'm glad I'll be able to read it in english ^^,
the uke's body seens to be in heat constantly, but taking suppressants daily cause much damage to the body, suppressants are made by alphas pheromones, so he used to have sex daily to get naturally his dose of pheromones without seconds effects, but it happens that he can't have sex with others alphas anymore, that's why whe is sick, the most reasonable choice for him is to form a bond with seme but he is relutant about it..
You know I read 3ch from the novel and is so intense and clearly detailed, in that night it was so dark that Felix couldn't see Isaac face clearly, he only felt his skin. That's why he couldn't recognise him or associated it with Isaac at all, it was not just trauma.
I don’t know where op found it but I just googled it and found it here
https://www.novelupdates.com/series/dear-benjamin/
There’s only three chapters but they’re pretty good! ╮( ̄▽ ̄)╭
100 times.. They're heroes indeed..