Hi Stella,
My guess is you were probably doing better emotionally before the door cracked back open a bit and he started worming his way back into your life. Your daughters are old enough that they can make their own decisions as to whether or not they want to pursue a relationship with him. Whether or not he's gay is beside the point now, he's treated all of you despicably, and you owe his absolutely nothing but silence. You will never, ever , get the whole story or the truth. Once I realized that and went no contact, I started to heal. Slam the door shut again. You can block your phone, and have his emails go straight to the trash bin where they belong. You all deserve better.
Good luck.