You can easily color your love heart once you're happy with the shape.
Go to Object > Fill and Stroke and click the Fill tab, followed by the Flat color button. Then click the RGB tab and drag the R and A sliders all the way to the right and the G and B sliders to the left. This will make the love heart red, but you can select a different color if you prefer. The A slider changes the opacity of the heart. To remove the outline, click the Stroke paint tab and click the No paint button to the left of the Flat color button.

