Interesting story. I don't know much about clanes in Africa but your story teach us how difficult it must be there for young people to accept distance and separation because of culture. I guess the two clanes involved here have a common language, but I guess the language could be different in some cases. Simply fascinating.
In my country we have a lot of tribes and languages spoken, although there are three major ones.
Cases of religious as well as tribal differences can come up during relationships.