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

I thought there was a 사랑 삼각형 between them. 담홍색, 핑크 and blue diamond were together and yellow was jealous and shattered 담홍색, 핑크 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 담홍색, 핑크 might have acted portrayed 의해 Stevonnie, I think a maybe they could've had a mother-daughter relationship. what do 당신 think?