Yes you should not be. You should care them. Don't ever try to over look things when you are dealing with your friends. You can face bad consequences. And there are chances that you will never know, what you did. So avoid any such inconvenience. Always care them. Always ask them if they need any thing. Because some time, they reluctant to say any thing with you. But you should always be the first to ask. There is no win or lose in friendship. Either both win or both lose. Friendship is the most precious thing, one can have in the world. Because there is no materialism involve in it. Only thoughts of care and prayers for SOME ONE.