Dilemma re play dates?

A month or so ago a couple borrowed a friends house in the road.  They had 8yo twins, 1 boy 1 girl, and were very keen for their kids to play outside with ours.

I of course welcomed them initially but it transpired the little boy was a complete pain, I overheard him say "let go scratch some cars with this" holding some stone or something, and "lets go knock doors and run away".

Thankfully they moved further away!

Today however I bumped into the mother in  Tescos in town, and ended up swapping phone numbers as she would like to arrange some playdates aaaaarrrrrrggggghhhhhhhhhh

I may never answer my phone, my heart wants me to be honest with her - Jasper doesn't want to go (he got in too much trouble) - would welcome any feedback?

Annie x