>>28888738May and Drew's last episode together is flat out titled, "May and Drew, Rivals Forever!"
May also blushes over him twice in the episode, Drew bonds with her over her loss in the Grand Festival, invites her to Johto with him...and that's where she decides to go.
They basically stopped just short of making it canon, likely to give Advanceshippers some leeway for people who still liked Ash/May.
