My sims don’t want relationships

So, I made two teenage sims and I wanted them to date each other. But then randomly one day, l don’t know if it was after an update or a mod but my male sim didn’t want to be romantic with my sim anymore. I got a notification and he said, “ I’m flattered but I am not interested in that type of relationship with you. But I would be happy to be friends.” Same problem is now happening with a few of my sims. I had to force my other sims to get married and have kids by cheats because they apparently don’t like each other after dating for ages. Anyone know how to fix this?