@noonsun: Even if you do not have a "life" you had an experience and you interacted with people.
My point is that I believe that my friends and I are difficult persons to hang out when we met new people,and everybody have this issue once in a while,but it seems like with the time is getting more difficult .
My friends and I have a great relationship together. So I wonder it is just my imagination or it is normal.
Well... it would depend on how well I knew the person who came with their gf/bf. If they were my friend, I would be interested in meeting the gf/bf, but if I didn't know them I guess I would just try to act somewhat polite. I don't really know.
That's just it. It's part of human nature. We as a species tend to make things harder on ourselves than it really should be to do things, particularly if these changes you speak of pertain to the self.