[ARCHIVED] Romantic Relationships decay/become negative fast with no interaction

I'm having this problem too after playing with lovestruck. Even when going to dates, my sim is in relationship with 2 sims, but both romance bars go from full romance to negative in a span of a couple sim days but they have very satisfied or satisfied relationship. My sim finished paragon partner aspiration. Friendship bars stay full green. There's no negative interactions or moodlets, the bar keeps going down really really fast