Never thought I would have to write something like this because it should be known by all. Do not talk about an ex on your first date with a new person or grill your date about their past on the first date EVER!!!! I understand wanting to know things if your looking for a serious relationship but it's better to not do this on a first date. You will SCARE your date away. You need to be open minded on a first date otherwise it really won't go anywhere. Its best to learn about their past relationships later. Plus don't be too stuck on their past people change but still be cautious. Sometimes people don't learn to change their ways.
-ChrisVigilante
