this movie was on HBO back in the 80's about a man raised by caveman

[chaspokinya]

but he goes looking for his real family and finds himself  a woman who is like him and they go and find more people like them in a futuristic city underground but they are not nice ..then someone helps him and his cave girl get away and I don't really remember anymore..

[Andrew]

Sounds like the incredible "Yor: The Hunter from the Future."  I have reviewed this one:

http://www.badmovies.org/movies/yor/