I want to go on a cruise with a couple of my girl friends who are also married/in relationships. My husband is telling me no. Because he isn't going I can't go. Is he right to say no?? Am I wrong to want to go??

EDIT: Yes I can afford it by myself easily. And no I would never tell him he couldn't do something. I'm his wife, not his mother. I don't think he would cheat and I wouldn't cheat on him. He just doesn't like that he's not invited. Because it's all women.