What kind of relationship do あなた think was between pink, yellow, and blue diamond?

I thought there was a 愛 三角形 between them. ピンク and blue diamond were together and yellow was jealous and shattered ピンク so she can be with blue is why she was trying to get her to forget about pink. but after seeing " Jungle Moon" after the way ピンク might have acted portrayed によって Stevonnie, I think a maybe they could've had a mother-daughter relationship. what do あなた think?