He was holding out a box of candy waiting for her to take one. She eyed it warily; she had too much experience with Fred and George's "innocent" boxes of candy. Hermione took a piece, knowing that they knew better than to trick her. She bit into it and immediately a strange warm sensation went right through her.
Next thing she knew she and Fred were laying on the floor, snogging as if there were no tomorrow while Ron yelled and cursed about Fred stealing his girlfriend.
Hermione found she didn't really care; Ron was getting on her nerves anyways.