I hope you discuss the issue with your therapist. I am kind of concerned about you being so devastated and you only met that woman twice. intensity of your emotions seems concerning to me. I often see it on this subforum. People completely heartbroken and devastated after one or two dates. It’s concerning. I am very emotional person myself however such attachment seems unusual to me. I am not sure about FWBs. I don’t want you to suffer even more if that falls through. Do talk to a therapist