Need advice

I am a senior citizen. Due to finances we decided to live together. I feel like we have a business arrangement but he can't see it. I buy all the groceries, pay for all yard work, pay house cleaner. When we go on trip, short or long I pay my way. We fly to Mexico I pay my air fare, 1/2 hotel bill. Travel in USA I pay for hotel and food on trip. He pays for gas and it is rather cheap here. He pays nothing for me. I cook, clean house in between house keeper, do laundry, water all plants out side by hand. He sits as his desk on his computer or on phone texting. Yes I am also his lover. He is very financial well off. He hands money to his kids and grand kids and thinks nothing about it. This really hurts. Please tell me if I am being childish. Thank You.