I think I'm curious about other women.
That's interesting. What are you curious about with other women?
Oh, I am very curious about lots of things about them.
As long as your not in a relationship and the other woman is not in a relationship, there is no problem with thinking about other women like that. It is only natural since humans in general tend to be attracted to one another.
Yes, but that is that problem. I am curious about other women but I am taken.
That is bad. Being curious about other women is normal but you cannot do anything about it if you are in a relationship. You could end your relationship and then feel free to explore your curiosity.