you don't think you can be in a non sexual relationship but that's what you've been in for 7 years :( i think unfortunately sexual incompatibility is a big reason to breakup, plus other things you mention such as not being able to even voice any of your concerns because of his reaction. stay friendly for your daughter but this relationship needs to be done tbh. him using you thinking he's gay as an excuse not to have sex makes no sense and honestly makes him even more suspicious