I'm a dog and my current girlfriend is a pig and my ex girlfriend is a rabbit.

I want to go back to my ex girlfriend who a rabbit. We broke up because she didn't open up to me and she keep pushing me away. I still deeply in love with her after the break up she open up and tell me how she feel about me, but I'm in a relationship now who a pig and start to have love feeling with this current girlfriend. Who I'm I most compatible with or how will I know which 1 is my sole mate?