He said I try too hard

I have been living with a guy for 4 months. He is used to just him and his kids. I cook, clean, and whatever is necessary. He is a very hard working man, very responsible and independent. He is not use to having a gf live with him. He is used to his daughter doing everything. He doesn't know how to show affection. Last night we talked about my feelings bc I don't think he shows any affection to me. Like attention, I feel like a roommate most of the time, until we go to bed. Which sex is great, and often every night. But I would like some attention and he said I'm pushing by asking for this, that he's not used to it. But in the beginning he texted sweet things and flirted with me a lot. Now that I am living with him, it has nearly stopped... What happened?