So, a me and a group of friends are meeting up soon, to go to a park or café, but I'm really worried about it because it'll be the first time I've seen my ex boyfriend since before we broke up (we go to different schools). People have told me that he has another girlfriend, and they did all the things we never did. He broke up by email, and I can't believe he'd do that. So when I see him, I don't want to ruin his life or anything, I just want to show him what I think of him (I rate him somewhere between slugs and dog poop), without sounding immature. You know, 'I go for quality these days' :) So if anyone has some really subtle remarks, that'll leave him working it out, please tell me!
Thanks x

Why not take the high road and actually be honestly pleasant to him? The Bible calls that "heaping coals of fire on his head" -- not to hurt him (any idiot could do that), but instead make him wonder why he dumped such a wonderful young woman who is a class act.