You want him to love you ... Maybe he does (as much as he is capable of loving someone) but you also want him to have a sex life with you that is more average for hetero couples ..... And he can't/won't. Because he is wired this way sexually.
As I said I don't know if it's gatmy, bi, or fairly extreme fetish for submission& degradation of some combo.
But the bottom line is that is who he is, that is how he is wired and him loving you or not, doesn't change that.
He is what he is and he (highly likely) will never change.
What I think is more important is not him loving you, but whether you love him as he is and whether you are happy. You love him but not entirely as he is (and very few women would), you naturally wish he didn't have this significant sexual fetish which dominates, no pun intended,your sex life, and excludes a more normal, average hetero sex life.
So (no criticism of you) you don't actually love him as he is.... Nor would many women.
Are you happy with him .... Apparently not entirely, due to his sexual fetish/es ..... And again, that's entirely understandable.
You are not at fault here. And it's not about your loveability.
He is what he is. He cannot change. He cannot change even out of love for you.
Personally I think you need to leave him to his fetishes, recover, and find a more average/typucal heterosexual relationship.
You've wasted enough of your life in this fucked up situation.