Frienship/Romance diminishing for no reason

Hello!

I wanted to come here to talk about a problem I've been having lately with the game, my sims lose frienship point for no reason, sometimes just being in the same room or by having friendly interaction. 

At first I thought it was a feature of enchanted by nature, because I play a lot with the occult so I just thought "Oh my sims grew up and manifested her fairy powers so she must have difficult relationship with some people." which I already thought was weird enough because it was with a Triton she knew her all life but whatever. 

But now it seems to happen regularly my vampire sims cannot seem to be able to get along with Vladdy for some un explicable reason. 

Has that already happen to some of you, does anybody know what I can do or what is causing this? 

Thx ❤️✨