
The fuck you're talking about? His fear and would be THE most traumatic thing for him is to lose Erv, his precious one, and it is something that is easily joked about? Last time I check using trauma and fear of someone to make them do something is not funny or cute. It shouldn't be normalized for a coping method either to provoke another, why bleed on others when it'll hurt them too? Your logic makes shit sense. If someone experience hardships, trauma, or share the most vulnerable parts you don't fucking do the thing they were scared the most: treat it like a casual joke and make it seem doesn't matter as much as that person who carried did. It's sad and nasty he did that so he can have more stamina in sex. His fear is not your adrenaline booster or laughing joke after that person was suffering from that fear. Your thinking is nasty and toxic. As someone myself who saw someone take my greatest fear and make it a joke, the one thing that haunted me, that ain't fucking love. I say this with experience and the meanest way possible, shut up and fix yourself.

You can joke around, but never joke about cheating. Everyone has a different level of sensitivity, and it just happens that I am one of those in the higher level. I am someone who remembers the words that the people I love tells me and I take it to heart. I am also anxious that people will leave me since I am not someone who has any outstanding qualities. This is why if my partner told me he'll cheat because I'm lacking, what do you think I would feel? It's only natural for me to be anxious of course. And if you didn't know, being hurt doesn't justify your actions of hurting other people who didn't even do anything wrong to you in the first place.

Relax. It is mistranslated!
They have a few parts mistranslated.
1. Yuri tells Vadis ERV likes to spoil the people he loved. In chapter 5 that is why he is so excited and hearts and Vadis asks him to spoil him. He reaction makes no sense if he is the one that likes to be spoiled.
2. When Erv asks him he did fall. Vadis tells him his horse falls.
3. Erv asks him to do what he do on the night with Tajael.
They ruined two moments that were special and meant something for their own personal agenda
I am going to relook to see if they have any more mistranslations.

I agree! Some parts didn't make sense. But asking another person to do that to you in the presence of your partner, I think it's going too far. Just to see the other's reaction and make them jealous, and Erv did say that he really liked the guy because his body is his type. It makes me think that if Vadis failed to spoil/satisfy him, he would find another person again and Vadis, who is scared of losing Erv, of course he would do everything that Erv wants. Erv could've talked it out and ask Vadis what he wants to know but he didn't. You know, based on my experience...everything falls down to pieces if there's a lack of communication.

You should know better that people has different sensitivity in terms of that part. If you could joke about it with your partner then it's fine, but you shouldn't think less of people who thinks otherwise because they have a different experience and opinion from you. Not everyone has the same sense of humor.
I love this story, but I had to pretend I didn't read some parts. People, even as a joke you shouldn't say you'll fool around with others because your partner is lacking! You might as well break up with them if you have that kind of mindset. This is why communication is important in every relationship, talk it out! People, if you cheat or think of cheating, then you're a trash! and even that word would be an understatement for you.