I just need somthing..

I’m 3 months pp. I’ve I’ve had one situation with my fiancé cheating when I had our first daughter whose now 15 months. We’re in therapy and currently working through issues. I’ve had many red flags that he did it again in our last fight around Father’s Day. He denies it and I have no physical proof. Long story short im bisexual and knowing ( womens intuition ) that he’s been with someone else im literally craving being with another woman now. Event my therapist asked if it would make me feel better and I really think it would. But I know it would call me petty or whatever but I want to feel something too.