Inside / Outside Church

Let's think about the way we deal with these people:
1. co-workers
2. family members
3. friends
4. bro/sis in church

I guess some Christian, including myself, use different approaches to deal with these four types of people each day.

Recently I have some thought about type 3 and 4. Some people in type 4 are also type 3. The funny thing is we may treat them a little different when we are inside/outside church. Inside church, we are bro/sis and serving the Lord is our 1st priority. But outside church we are just friends and there are many reality concern we need to deal with first. So I have two question:

1. Is the problem just on me? Does other Christians have consistent manner to bro/sis inside/outside church?

2. Even it is the case, so what!? Does Bible teach us to treat our bro/sis same way inside/outside church? Or doesn't it?