you guys seem not too adjusted to American Life style This not selfishness ..this is how it is in US - a life style, a culture ..mind your own business.People are insecure and yes they are not to inviting to new people , comfort zone .They are not avoiding you because you are nepali .They will avoid anybody. And there is obviously Problem with you guys too .You guys do not know how to build friendship , penetrate their iced hearts(too cold).It requires effort buddies and skills. You got to make your self likeable.. a skill to be learned.:)