Jack Philips has made many cakes for gay weddings, he just does not know it.
In the future is he going to ask if the cake is for a gay wedding?
Will he choose to be offended then?

What if he asks and is lied to? The baker chooses to not be offended. Then he makes a cake for a wedding. It turns out the cake is used in a gay wedding. Is the baker offended and does not know it?

The baker is being a child.