A relationship that is aiming for more than friendship but still has not met the dating phrase-- its like dating without commitment and little, if any, serious DTRs (defining the relationship). You don't date a "frient"---you hang out.
Because of the lack of commitment, you cannot cheat if you are only frienting.
You and your friend work together selling cars in Wisconsin in the middle of the winter. You are stuck at the dealership for long miserable hours with no traffic and nothing to do. "Dude, I fucking hate my life, you think you could do me a solid and commit friendicide on my sorry ass"?