Hypothetically speaking, say your family/ close friends didn't like your girlfriend/boyfriend would you still stay with them or leave them alone? Would you risk your relationship with your family for something that can be long term?
I don't need anybody to like my girlfriend/partner; i need to like her, that's it. Everybody else is welcome to like or not like her on their own terms. Some people are totally irrelevant, too. The only people i'd care about at all are my parents, my sister, and, to a lesser degree, my closest and best friends (which are very few). Not in the sense that i'd need any of them to like her, but that i'd be happy if they do. If they don't, too bad, but that's that.
Now, even though i respect my best friends intellect much more than i do my family, my family cares much more about who i end up with than my friends do. As such, they are more important in this regard. Generally, intellectually, or in terms of helping me assess my choice, no opinion would really be very important to me other than my own. I'll listen to those close to me of course, and even those less close if they really want me to know what they think, but in the end, it'll all be of very little importance. Which mostly has to do with the fact that it requires a lot for me to choose who i want to be with in the first place, so it'd be extremely unlikely for any of those people to tell me something i don't already know.
My choice will almost certainly be based on very strong reasons, and as such, anybody having a problem with it in the form of "not liking" her, and to the point of risking my relationship with them, will become of little importance to me. I'd always choose my partner/girlfriend. That said, all of those close to me are cool, and it's extremely unlikely that such a situation would present itself to me. Most importantly of all, it's because we care about each other, and know what are our boundaries.