My boyfriend tells me everything about his past and i hear stories from other people about his relationship with his ex of 6 years. I heard stories that she was lazy, controlling, toxic, problematic and my boyfriend admits that he always knew he didn't love her and settled for less because of his own insecurities so he had like low standards for girls (he only wanted to date mid looking girls because he thought they were safe options because other guys wouldn't want them) but still tried to make it work with her. He told me that he was gonna propose to her. Hearing all of that just ruined my perception of him because I feel very turned off because of several reasons:

1. he had low standards and was still willing to propose to her eventho she was not a great person but he was still gonna propose. This made me feel less special when he says he wants to marry me because i now think 'well it's not that hard since u would've married like any girl'.

2. He didn't love her yet dated her for 6 years. Basically wasted the prime years of his ex's life. I actually feel bad for the ex if i were to put all my prejudice aside, i can't imagine what i'd do to find out my bf of 6 years never loved me and basically just used me because he didn't wanna be alone and was ok with settling.

So now i'm not sure what to do about the situation. Our relationship is great except for this whole situation with his ex and it bothers me because it makes me have very poor thoughts towards him. And i can't just forget all the stories i've heard about his ex and it just makes me feel horrible everytime i think about it.