Troubling Father Daughter Relationship – Is this Covert Incest?

Is this relationship between dad & daughter abnormal when Dad treats daugther better than everyone else in the family no matter what?

Is it okay for a divorced man to take his 15 yr old daughter to an expensive dinner every weekend especially when he is always complaining about his finances? My boyfriend has a daughter from his previous marriage and he says her mother doesn't treat her well. Basically the maternal mother is jealous of the daugther so he compensates for it. It seems to be a bit out of control to me though and I need help with this. He is constantly complaining about spending money but he will buy the most expensive everything for his daughter from shampoo, skin care products for her to the most expensive clothes, and then says he has no money to go to the movies or away with me on a weekend he doesn't have his kids. He can't take me out on a nice date without complaining about the expenses, and he can't buy his son a pair of socks, but everytime we stop at CVS the daughter leaves with an additional $25 worth of beauty products or hair accessories. His son cant get colonge but the daughter can have everything she wants. This started as soon as she got her priod. Honestly people, what 12 year old girl needs $20 razor blades or $30 shampoo? What 13 year old needs Juicy Couture, $150 Uggs, and coach bags? Does she have a job? He won't buy a video game for his son, but he takes the daughter out for an expensive steak dinner every weekend he has her because otherwise she will pout and throw a tantrum. She won't go to the movies with her dad and brother because it is embarassing for her friends to see her with her dad and brother and they have to go to another town when the dad wants to take the kids for a movie, but she feels okay going to an expensive dinner every weekend.

Anytime she throws a tantrum he lets her without any kind of punishment and anyone who points out the bad message this send out ends up getting punished instead. What little girl where thongs and gets their dad to buy them $50 push up bras? Have I lost my mind, or am I completely out of touch? I grew up with a mom and dad in the same home and a brother and none of this crap ever happened in my house! He acts as if his daugther is his partner and we all have to abide by her rules or pay the consequences. He boasts about her beauty, and popularity and how great she is, how she is happy all of the time – but he refuses to see she is happy because she manipulates him to get whatever she wants, and he follows, and then he ignores or blocks her mean acts towards others and her tantrums with him. He shares his personal life with her and what is going on in her brother's and he lets her decide what is best for her brother and they are only a year apart.

How do I get him to understand how this is desrtuctive not only to our relationship but also to the reltionships both his son and daugther will end up in as they grow older. He is basically teaching his daugther how to use men, and his son is conflicted as he sees his sister get everything while his father acts as if I am a rug.

I don't want to argue with him, but I guess I want to know if I have lost my mind. Should I jump ship and run for a life boat or what I can do to help him understand that this behavior is affecting our relationship and pushing me away. I am uncomfortable whenever she is sitting on him and sprawling on him, as well as when he yells at everyone else (his son, and myself) for trouble she causes. I mean honestly, I am beginning to think that this stuff about her mother is completely made up and the maternal mother is not really even jeaalous at all, but just disciplined and fed out with her daugther's manipulation!

Sorry this is so long but I need help.