Yes it would; a continent life within marriage, since both the Blessed Mother and St. Joseph were subject to the oral law of Kiddushin. St. Joseph was prepared to put the Blessed Mother away privately because he knew he was not the father of her unborn child. It's ludicrous to hypothesize that once St. Joseph was made aware that the Father of her child was the Holy Ghost he would even anticipate a conjugal life with the Blessed Mother who herself was a consecrated virgin. To engage in conjugal relations after the birth of Jesus would have made both of them adulterers. It simply didn't happen.
Linguistic literalists like yourself cherry pick Scripture thinking they've found the smoking gun proving that the Blessed Virgin Mary gave birth to other children. In the process you neglect to provide the quotes from Scripture in which the words brother, sister, brethren mother and father are used to describe people with no biological relationship whatsoever. These people have a very poor comprehension of Scripture, Jewish customs, Hebrew, Greek and Aramaic. None of which is surprising in a world of moral relativists.