بسم الله الرحمن الرحيم
It seems that this man just keep repeating the same words. since he knew that jesus wasn't born on the 25th of December so why did they choose this date in particular??? this is because the 25 of december is the date when pagan nations were celebrating the god of the sun and christianity chose this date in particular to let the pagan people enter christianity cause they found many things in commomn with it.:
My dear brother Zafox, i would like to advice you to stop talking with this man and choose other people to talk with them about Islam perhaps they may convert to Islam and leave the hopeless cases such as this man.