I believe if there were really was a man who lived that is now called "Jesus" (Joshua would be a more accurate translation) as described in the Bible he would love me. Even non-christians recognize the wisedom and love displayed by the man we call "Jesus".
If a diety whom has been dubbed "Jesus" does exist I would have to imagine that other dieties do, as well. There is no more evidence to suggest that a Yahweh or Jesus is real than there is Zeus, Odin, or any other god that is or was worshipped.
We can thank Emperor Constatine for spreading Christianity to non-christians. This was usually done at spear or sword point. Most christians believe Christianity is the true religion because that is how they were raised.