@THEY HAVE NOTHING IN COMMON

"they share no religious background. being a muslim he probably despises IN SECRET every word about Jesus that comes from her lips"

Excuse me?? What do you know about Islam and Muslims?
Im muslim, and I probably love & respect Jesus more than you do. And as a muslim man he is permitted under Islam to marry a Christian woman, as Christians as well as Jews are "people of the book" (bible, torah) .
So he could be planning a future with her that is permitted under his religion.