TweetTweet; I know a nice few ppl who are happily married, because they gave it another shot. However, If there are major differences in hashkafa, I suggest discussing it with a Rav or a trusted Rebbe.
Since dating is w/ the intent to head into marriage,
a hopefully lasting arrangement totally dependent upon the compromise of both parties, it is counterproductive to be stubborn
when dating and dealing with a possible soulmate.