How to handle fiancé’s (29M) approach to handling his sister’s (30F) attitude?
I (29F) am an only child so maybe this is why I can’t understand it (at least that’s what my fiancé (29M) says).
My fiancé (29M) used to have a close relationship to his siblings growing up, and was particularly close to his older sister (30F). She has somewhat a difficult personality. She is quick to judge and shows no restraint in giving her opinion and making negative comments about any situation, even when it’s not necessary and might hurt other people (for “the sake of being honest”). I find it a bit difficult to deal with her sometimes, because no matter if her actions or comments hurt me, my fiancé still expects me to ignore it and want her around, and brushes it off with “her being this way, and her being his sister”. He mostly tries to find an explanation to her behavior, no matter how bad it is.
For a long time he had this picture in mind that we would all get along really well and would be one big, happy family, but he is now starting to realize this might not happen. He pushed me to ignore her comments and attitude for quite some time, but recently realized the problem lies mostly with her (she admitted she doesn’t think relationships last and would not think anyone he dates would ever be enough - hence her recent behavior towards us during our engagement). This impacted him quite a bit at the time, but since then he has gone back to being the ever forgiving brother. I maybe should add I have a good relationship with his parents and younger sisters - the problem is only with her.
I don’t know how to proceed about this. I understand she’s his sister and he will always care about her, but I don’t understand enabling her behavior regardless of the circumstances or letting her face no consequences. I have developed an aversion to having her around, because I have a feeling she will always feel like she can act however she wants around me without facing any consequences. My fiancé says I should still be nice and friendly with her because this is who I am, and he doesn’t seem willing to change anything in his relationship with her, regardless of how she acts towards me.
How would you proceed if you were in my shoes? Is it true that because I am an only child, I don’t understand that this is how one should behave when they have a sibling?
TL;DR: my fiancé says that because I am an only child, I don’t understand the bond between siblings, which apparently includes letting them act however they want without facing any consequences.