You simply ask. If he has nothing to hide, he will tell you.
Ask politely?
Remember your ex is your ex for a reason and not worthy of a comparison to your new one. Look to the future, concentrate on your current boyfriend and leave the past in the past.
Call the police
No one here knows you or your ex boyfriend. You can ask him if you wish to know.
Questions you should ask is why does he want to harm your ex.
"be ma boyfriend"
Ask him.
ask him
ask him
If you are still interested in your Ex ask his friend that she will get the pick from her Ex not from his friend.
No. He's your ex boyfriend for a reason. While reminiscing on what you had, keep in mind why you broke up in the first place.
You can't he's your ex. Get over him and move on.