Actually Emma, there are far more people than you know who haven't spoken with family or relatives for even decades, or have some 'toxic connections' or baggage or ample hurt within their family relationships, but they usually don't talk about it.
You said your bf said his mother would be 'horrified', so I would let it be. A question can include an answer- but does not require disclosure. If your bf knows, he may tell his family small details that will make it easier for you.
In the meantime, it sounds like they love you, 'as is', just go with that. If they are healthy and well-balanced, and think their son is happier because you are in his life, and they like you, that's all that's needed, for now. You and your bf are adults, and have to choose what you feel is right for each other, and your relationship.
Chances are they are happy, because he is happy, and because they genuinely like you, and they're respecting proper boundaries.
You said your bf said his mother would be 'horrified', so I would let it be. A question can include an answer- but does not require disclosure. If your bf knows, he may tell his family small details that will make it easier for you.
In the meantime, it sounds like they love you, 'as is', just go with that. If they are healthy and well-balanced, and think their son is happier because you are in his life, and they like you, that's all that's needed, for now. You and your bf are adults, and have to choose what you feel is right for each other, and your relationship.
Chances are they are happy, because he is happy, and because they genuinely like you, and they're respecting proper boundaries.