[POMAH_K]

I dont think arranged marriage is forced on this brother. This marriage has taken place with his approval. Unless one lives and spend time with the spouse, one cannot know them. I dont know how will one have understanding before marriage for the real understanding comes with time after marriage. We should give enough time and try to fulfill others rights as best as possible making duaa to Allah SWT and things will come on its way inshaaAllah.
Make plenty of duaas for it is Allah SWT who puts love in the hearts of spouses.

When a man came to ‘Umar ibn al-Khattab (R.A.A.) and told him that he wanted to divorce his wife because he disliked her, ‘Umar (R.A.A.) said, “Woe to you! Are families only built on love? Where is your consideration and care?”