Last week, Zoë Kravitz and Channing Tatum reportedly broke up, bringing one very cool relationship and Hollywood’s most radical hunk style makeover to a devastating end. Since then, the former couple have been engaging in the requisite breakup activities. Kravitz was seen “dancing all night” and “looking really happy” at a Princess Diana–themed Halloween party on Thursday night. Meanwhile, Tatum was seen out and about in New York over the weekend, solemnly smoking...