<human>: Give me the gist of the text in a nutshell

I'll try to keep this as short as possible but I can't make any promises. So my boyfriend and I were always close friends and then we started dating near the end of high school. We tell each other everything and, the way I see it, our relationship is perfect. We have no secrets, we have the same sense of humour, we respect each other. Basically we just always have a great time and we know that we're going to spend our lives together.

The problem is my older sister. She and I have always been close but she can't hide her opinion about my boyfriend. She calls him rude, stubborn, lazy and tells me I can do so much better. She criticises every single thing he does, even if it is treat me to dinner or take me away for the weekend. When we went on a holiday together all she had to say was 'why go with him?' and she always asks me 'so when are you going to break up with him?'. (I should point out now that all my friends and the rest of my family think he is lovely and say we are the most adorable couple). I've told her so many times that she's being rude and hurting my feelings and that the things she says aren't true. The other night she confronted me and said 'if you're still with him when we're older, you know we won't be friends' and 'I won't want to hang around you if there are little (boyfriend's name)s running around'. I guess my question is where should I proceed from here? She's basically asking me to choose between them but it's a choice I don't want to make.
<bot>: Sister doesn't like boyfriend. No amount of loveliness on his part has managed to change her mind and now she's pointing out she won't want to be around me if he stays in my life.