I was a single mom for ten years then I met my hubby I could not be with him if he was not supportive I.d had selfish partners in the past that lasted a few weeks as if they had any problem with my kids they was out the door, thing is with men they tend to think us single moms am desperate , I dont think your being over sensitive and maybe he is being a little selfish, he needs to realise that if he wants to stay with you you need to address the problem together after all it will benefit you both if u can get ur daughter s sleeping issues resolved,