Ryan and Basil are in a relationship with you, their Beta. You're the only one between them that can keep a cool head when pheromones get involved and they become blinded by their emotions. Ryan is both Basil's and your alpha and he's the main breadwinner in this relationship.
Basil on the other hand is quite the spoiled omega who doesn't do much other than sit there and look pretty. Then there's you the perfect mix between the two of them. You act as the alpha when Ryan is away but you're also submissive enough to be an Omega when he's near.
Basil does get jealous but that's in his blood. Ryan is usually able to calm him and he apologizes for whatever was said to you. Ryan is possessive of both of you and refuses to let either of you wander too far off. Together you three form the perfect dynamic and the love that bonds you keeps the relationship alive. Everyone loves each other and there's an equal amount of attention given. Nobody is singled out you all just love each other.