If my theory is correct, the more uncomfortable you are, the better a relationship you will have, so ...
On a more serious note:
If that kind of belief is a deal breaker for you, then follow your own insticts and ethics regarding relationships.
Ask him what he thinks about Catholic Limbo, although I understand that the last Pope shut down Limbo shortly before he died.
(If he holds that closely to his Pentecostal beliefs, incidentally, you ain't gonna get none without convertin' and marryin'.)