Why am I so depressed about losing my online friends?

I'm a heavy Xbox gamer and I belonged to a community that I got kicked out of due to lack of communication. When I make online friends I sometimes develop a friendship with them over time. Sometimes a mishap happens that ruins the friendship. I usually do get  upset over it and take it personally. I did join a new community that I feel is the right one for me. It is so far I can see a friendship oriented community. I'm a very friendship oriented guy even in the online world.