They are very good at deceiving those they don’t abuse and it’s not unusual if they are quite popular and very charming amongst people and that’s why they’re ‘good’ at trapping someone. You will obviously fall for their fake personality and once they have you, that’s when the abuse will occur and this is one reason why victims/survivors find it hard to believe/recognise they are being abused (more common if there’s no physical abuse). It’s really sly and disgusting but it’s sometimes hard to tell from the outside, unfortunately.