idk about ghosting. you have good reason to end this. Just be honest and end it with the reasons being that not only has he been convicted of domestic violence, he's went as far as to not be honest with you about it. Think about it, someone that is repentant of their behavior in the past will have no problem being honest about it. Someone that tends to hide it typically hasn't fully come to terms with it nor holds themselves responsible for it. that alone should tell you this guy cannot be trusted.

I don't think ghosting itself is a good practice myself but I do think you should move on from this guy. If one person were to tell you it's a bad idea, that might be something to shrug off but it seems not only your parents, but your friends and everyone here on pc are telling you this.