I forgot where I heard this from (most probably a movie), but there's a saying about how you can judge a team by the relationships between the members - if the members are really close, it means that they have been through much together, and thus the group must be well-trained.
What better way to show how close T-ara members are than Kissing in public.
And the post-kiss hug.
And some secret-whispering to make everyone else jealous that they are not part of the thing.
I recall seeing more of such photos, but that's all I can find at the moment; maybe I'll create a full collection of such pictures, do share if you have links to any.