Are batman and wonder woman are good friends?

You can there re two people who are special, one of them is batman, and another is wonder women.
I am doubt that do they are good friends?
I often see batan and wonder woman together, and it seems like they always have good relationship, and I like to see them in different public places.
People often choose to wear superhero zentai costumes at
halloween or some other holidays, such as easter Day ect.
Choose a right costume is important for you, and
you will be popualr in daily life.