The Sims 4: The Day I met The Grim Reaper

I'm Shellby Siren the hottest mermaid in Sulani Island I lost everything that was dear to me my mother and my brother that is until I met the Grim reaper which changed my Life forever, we have a non-committal relationship we never whoo-hoo with one another and we date in between our jobs he put me under his training as the next grim reaper but I rather lose him and Change my relationship status quo and wants to breakup with him but he keeps begging for mercy and I want to decline his soulless begging he flirts with other women at work and I'm just sick of it and we've never whoo-hooed at all in our spare time but supposedly i want to quit my job under his training as the next grim but what is there a mermaid supposed to do?? should I murder him or change my relationship????