To add detail, there were three people in a group chat; me, a girl and a boy. Boy deactivates Facebook account and we just ignore it and keep chatting on the group like it's personal chat.
This is all fun and games until I started talking about the boy on this chat and realised my mistake too late. I immediately removed him from the group (he came up as 'Facebook User').
If he re-activates at any point, will he receive these messages?