Modules : Kisses
Under Modules > Kisses (/admin/kisses/index/) you can manage the images that your site members will be able to exchange to attract attention or to strike up a conversation.
You can upload any images here, just make sure to check what they look like in the user mode.
The Settings tab (/admin/kisses/settings/) gives you control over the number of items per page and the characters limit per message.
This is what your site members will see in the user mode: