is a three way realtionship health

I'm in a three way relationship as we speak. Only. Because. My. Baby father. Cheated. On. Me. With this female and. One day I started. To talk. To. Her. On the. Phone. And we meet. Up and. Had. A threesome then it turned in to. A relationship. And. Now we not getting along with each other. She. Doesn't spend time. With. Me. Anymore and. I'm losing feeling. Cause. All wedo is argue and we don't sex each other. Kno more what. Do I do now. That. I'm losing feelings for. Her. ? And. Still loving. My baby daddy. His spending. More time. Now. Then. Before