But who said it was over? I mean, they had a great friendship AND lived together. The thing that was over in this case, was the living together. Can't the friendship still live? It's worth a try, at least. Friends don't come easily. However, I agree with a lot of others here saying it probably won't be the same. But change isn't always bad. It helps developping you. Maybe it's a cultural thing, this thought that people you had a relationship with can't be friends...? It's rather normal here. Really, if you are not vindictive/jealous/immature about it, it works very well. (I guess what I say, is that if both have moved on, mentally, it works).
Both being tools? What do you mean?
And pity?