Exactly, Brett clearly wants more with Hayden, but I wonder why he chose Hayden. I'm excited to learn about his past, but I feel like it has something to do with abandonment and having a life of freebies that resulted in Brett wanting something that only he can control and be himself with. they both like each other tbh
I think Brett chose Hayden because they are somewhat similar? Both of them are affected by unwanted "instincts" that affect their current lives, as Brett said, he also tried "normal" until everything was pushed too far and exploded. At first, Brett might have just been probing Hayden like many other people he was interested in, but after learning about Hayden's past, he realized that their circumstances were somewhat similar (?) + the intense fucking in ch.3+4. Brett believes that Hayden is the only one who can satisfy + cooperate with him at this time. Not counting the sexual aspect, cooperating with Hayden is quite advantageous because Hayden is the type of person who lives a closed life, which ensures Brett maintains his Alpha image. Since finding a suitable partner is very difficult, it is reasonable that Brett wants to keep his relationship with Hayden as comfortable and fair as possible.
I think what makes this relationship feel incompatible is not simply social status, different opinions, different personalities... But also because Brett can freely interfere in Hayden's life a lot, while Hayden can only do so (or even show interest) when Brett actively invites Hayden, for example, inviting Hayden to a charity party. Otherwise, Hayden doesn't know anything about Brett. He only knows that Brett is a crazy rich eccentric, addicted to pheromones. Many people think that Hayden always wanted a serious relationship, but I think Hayden is the one who wanted this relationship to be only sexual, until he gradually developed feelings for Brett, because he didn't trust and hated Brett, and using each other for sex was the only agreement between them. The fact that this relationship could even develop into a romantic relationship is because Brett is the one who keep pushing and blurred that line, whether intentionally or not. Brett is trying to act like he has no plans for a serious relationship after putting so much effort into Hayden? Who is he fooling?