I'm just gonna say it, they're cute together and I enjoyed watching them in Bunny + Alistair 4 Ever After.
Their kiss might not have been mind blowing, but it was pretty adorable, and it was funny to see Alistair stand up to Sparrow Hood when they first arrived in Ever After, after Sparrow gets a little too close for his liking. Plus Bunny's comment after Apple hugged Alistair; "Have the girls here never seen a boy before?" The jealousy there is something pretty new in Ever After High as most couples don't get jealous of others.
It irks me a little when people talk about shipping them with other characters because they have obvious feelings for each other and I couldn't see either of them paired with anyone but each other.