On issues of who is the father and homosexual couples, the policy is “don’t ask - don’t tell”. We’re not supposed to think about how sperm and egg joined together or whose sperm and egg joined.
Actually, you really aren’t supposed to think of how any couple gets the sperm and egg joined. Even heterosexual couples don’t consider that anyone’s business.
Just the fact that homos have to jump through hoops to have a child should show them what they are doing is not the natural order of things. But yet, they try to sell it to the public as an “alternate lifestyle”. Its just plain wrong.