sisoon, my wife too has loathed herself her whole life. A large part of her affair came down to the fact that she hated herself. It's mostly due to how her family treated her and some other horrible events in life but she generally believed no one loved her so she grew up thinking didn't deserve love and never found it in herself to have self-love.
Despite being talented, independent and a generally wonderful person she never found any merit in herself. She was never good enough and never worthwhile. It was always there from the beginning, the low self-esteem and lack of recognition for her positives. I just didn't agree with what she pointed out was wrong with her.
I too fell in love with my wife as is. I loved her for who she was. Good, bad and everything in between. I simply loved her for her. She never understood. Never. Not one bit of her could understand how I could love her.
Her mother didn't love her, her father didn't, nor her sister or brother. No one in her extended family. No friends, teachers, anyone really. At least not in a way she understood love. It was never modeled for her healthily. So how on earth could I love her? No one else did.
This feedback loop kept running through her head. She's worthless. Why? Because no one loved her. Why did no one love her? She's worthless. And so on. When it came to my love she explained it away as I didn't see the real her. I was blind. I love her out of obligation. I'm too nice a guy and didn't want to hurt her. I'd one day realize how terrible she was, have enough and leave for someone better.
This self perpetuating hatred fuelled many horrible behaviours and thought processes. It truly was a self-fulfilling prophecy in many ways. She acted shitty, we'd work on it, yet she'd hate herself for acting shitty, so she'd further act shitty. It was beyond toxic, I saw it, and I was helpless to do a thing about it. I wound up feeding into them at times after I gave up knowing what to do and we developed a very unhealthy dynamic for a couple years until I started breaking away from it. Her affair was a not to distant eventuality after this.
I suppose what I'm long-windedly trying to say is I entirely understand how your wife not accepting your love can break your heart. Reading your post I understood and could relate to every sentiment you shared. I've been in the same place. I love this woman beyond regard of common sense or likely sanity just for who she is, yet she never could accept that.
Also, she was always afraid of the love I showed her and what she felt for me. She always believed we'd inevitably break apart, as if it was a fact. Her father had abandoned her, her mother even at least emotionally. Those things hurt her beyond words and affected her negatively for life, she was terrified and afraid of what we felt because that inevitable breakup also meant inevitable excrutiating emotional pain. She was afraid to be loved by me, and afraid to love me fully.
She's done a lot of work the past year on finally accepting that I truly do love her, and done a lot of work on accepting why. Decidely made more difficult because she could easily use her affair and behaviour in the months prior to self-loath even more and spiral downward in shame, but thankfully she's done the opposite. She admits she still doesn't fully understand how I can love her, especially why so much, but she's getting there.
It's primarily in response to finally seeing the good in herself and appreciating who she is. She doesn't love herself yet but I do believe she likes who she's becoming. Which is a stark change. It's required her to delve deep into her FOO issues and how they've influenced her throughout her life. She still has a long way to go on this front but the foundation she has is wonderful to see and I'm sure will lead her good places. It's helped her also open up to feeling healthy love and giving that to me as well which is nice.
Hopefully your wife can let go of her fears and dig down to work through those dysfunctions that prevent her from fully accepting your love. It is heart breaking in its own way and tough to work though.