I think it would be the kiss between Iron Lad and Stature, it had no purpose!
That night was the first time they met(for about 5 hours tops and that's being nice), they were getting chased by Kang the Conqueror and I don't think that is a time for romance if you don't like someone already. It would've made more sense for Billy and Teddy to kiss since people noticed they liked each other already from the first freakn chapter
And yes, I can rant about this all day