Maybe you feel it natural to assume this, but as you said it is assumption, speculation. Until it doesn’t come from Gillian or PM’s mouth, until we don’t see them acting like a couple, it will remain speculation. It won’t be more real than Gillovny, or any other person you would want Gillian to be with. And as long as it remains this way, it is not okay to tag Gillian on your ship speculations.