Create a simple line drawing of a cute rabbit and a cute squirrel standing next to each other and holding a heart together. The rabbit should have big, expressive eyes and long, floppy ears, while the squirrel should have a bushy tail and a playful expression. They should both be smiling warmly. The heart they are holding should be centered between them, large enough to emphasize their connection. The drawing should be clean and straightforward, with clear lines and minimal background details to make it easy for coloring