What do you call a man who has never been married?

bachelor. noun. a man who has never been married. It is more usual to say that someone who is not married is single.

What are the odds of never getting married?

An earlier Pew Research Center report projected that 1 in 4 of todays young adults may never marry, if the current marriage trends continue. It is important to note that the share of never-married Americans has increased at a much steeper rate since 2000.