...anyway thanks for the image cause Kudzu is Echo's supreme Husbando.
I cannot speak for everyone, but...
Sure, you may call Leo obssessive and/or toxic, but does anyone stop as to ask: por qué? Unless we have concrete indication as to the nature of their failed relationship, I empathize with Leo because I know I can be as downtrodden as he when we allow our desires and fears to distort our feelings and perceptions of our relationships. Leo wants to settle, but Chase wants to explore. Leo plans a future with him, but Chase wants to have his own. They literally cannot be together because of their different goals. Leo essentially chases (I see what you did there EchoProject) him in an endless effort (a la tulpa) to fulfill his dreams, but the way I see Chase is that he is running away from his past (the "bad") and chasing his own dreams (the "good"). I recognize how much Leo loves Chase, and I know how devastating it is to have his love unrequited.
To me, Kudzu is a clean slate, no drama, no history with Chase, a new chapter, a fresh start. Who doesn't want to chase their ideal husbando who has little to no flaws especially when contrasted to another with polar opposite qualities? I'm no exception to implicit bias, but I choose to stand by with Leo because he represents our ugly side of humanity that is misunderstood and rejected. To heal is to understand and to accept the hurt. I see myself in Leo who is hurting, but I don't see anyone helping him heal which is ironic considering Jenna, an aspiring psychologist, fails to establish rapport with him especially with Chase around (a missed opportunity to practice relationship counseling).
Also, I am biased and based for anthrowolves especially one with a football dad bod~
Plus, I have a preference for Latinos especially those with dark skin, badboy looks, and dad bods~
Really loved your explanation, and think I can relate now. I can identify with the wolf (always thought of them as my spiritual guide). Specially on the Latino side jaja ;). But this also can explain why I prefer Kudzu over Leo. Leo is more something I could be but prefer not to, and Kudzu is someone I could never be, but wish would be there for me.