Does he want me for me or just for company

hi im a 28 year old girl and in a relationship with a 60 year old men...we have been together for 4 years. at the begining he said he wanted children then out of the blue after 4 years he says he doesnt...within those 4 years we have never been on a holiday or time away just him and me alone, always his daughter (16 years) has to be there along with other people...the sad part is he finds time wvery weekend sat and sunday to have lunch with his daugther alone...last month his daughter had her birthday and i was not invited. his ex (the daughters mum) was there, when i asked him y havent i been invited he said his daughter didnt want me to be there...this is so sad and painful...this kid has been tearing our relationship apart since day 1...the more i talk to him about it he blames me and says i've got a problem...what do i do ...he basically doesnt care anymore, when i pack up and go he blames me again, when i come back he acts astrange....help

Get out. Everything you have just shared is a no win for you. And don't blame his 16 year old for ruining the relationship. She is a child and her feelings are completely understandable. This guy is 60. If he can't be man enough to do better and be better to and for you this is no man. GET OUT. Find a real man.