This is just a silly bill.
There just aren't a lot of businesses where a couple is the customer, and not only one of them. Tax preparation, I suppose.
How is a restaurant owner / mechanic / sales clerk going to know if two people are married? Especially if only one of them is conducting business? Are they going to ask?
Now if you have a couple of people come into a restaurant and start making out, that in itself is enough to refuse service - no matter if they are same or different gender/race/religion. Has nothing to do with those things.
I certainly hope this bill will get laughed out of the building.
And I take "10 seconds" in your pool.