Reading though another blog, I came across this gem. (For the benefit of non-native readers, this is perfectly acceptable, I think). What I believe it shows is that syntactic selection—end up takes a gerundive complement—outranks semantic coherence (statives should not usually be imperfective, end up normally implies some type of accomplishment or achievement.)
The guy sounded like a native speaker, and the woman sounded American, and she ended up being someone I haven't seen in a few years.Curiously, the other more plausible paraphrases are less acceptable:
#...she ended up to be someone I haven't seen in a few years.
#...it ended up that she was someone I haven't seen in a few years.
