If I am not mistaken, Rav P.S. Berg ( I know he is not a good source according to Jewish authorities) said in his book "The Essential Zohar" that if someone didn't get married during his lifetime, he won't have a share in Olam Haba.
In case that's true, is the same rule apply to gentiles ?
P.S: I , again, know that his work and university is not trusted among Jewish authority.