My bad, should have paid closer attention. Let's go on anther Greek expedition.

The "until" of Matt 1 = "heos hou" in Greek. Throughout the Gospels and the rest of the New Testament "heos hou" is placed not to demarcate "it was like this before and then after this moment it changed" but simply to indicate a "while"

Ex: "“Then Jesus went with them to a place called Gethsemane, and he said to his disciples,  ‘Sit here, "heos hou" I go yonder and pray.’ ” - Matt 26: 36. Obviously here it means "while". The context of Matthew 1: 18-25 is that the author is to underline the point that Mary has conceived without sexual relations. Mt 1:25 drives this home. Sure, more specificity in either direction indicating that they definitely had relations after Jesus' birth or that they never once had relations ever would be helpful but it's left ambiguous. The Greek doesn't meet your assumptions though. 

Just to be clear, to you Church fathers are "primitive" and apparitions are "ghosts". Right?