So, I'm new here; and I know the title of my question may be confusing but let me explain. I'm a writer, I've been writing nearly full-time for a year now and I am in the midst of writing a story that has an older gentleman who has taken a younger gentleman under his wing as if he were the younger man's son.
Since both are adults, the legality of adoption is not feasible; but as many people experience in life, they bring people into their lives and 'adopt' them anyway as either Aunts, Uncles, Grandparents, or even secondary parents...
My question is: what would be a good word that would describe their relationship? I thought I had a good word for it but for the life of me I cannot seem to get it out past the tip of my tongue.