Ml had trauma with beta. But his love is a beta, so his feelings contradict that's why it's only push and pull in the relationship for the past 7 years, but ML does love mc. The thought of makkng sexual advances towards beta doesn't turn him off or disgust him, it's the thought of doing similar thing his childhood self saw his dad doing is whay disgust him. And Mc love ml too much to leave.
It does feels off when only now that mc turn into omega that ml want to do sexual things, but too much trauma played a part they need to communicate and work on their relationship
So basically
Ml had trauma with beta. But his love is a beta, so his feelings contradict that's why it's only push and pull in the relationship for the past 7 years, but ML does love mc. The thought of makkng sexual advances towards beta doesn't turn him off or disgust him, it's the thought of doing similar thing his childhood self saw his dad doing is whay disgust him. And Mc love ml too much to leave.
It does feels off when only now that mc turn into omega that ml want to do sexual things, but too much trauma played a part they need to communicate and work on their relationship