Although you might think that the characters on your keyboard are the only characters that you can display on-screen, there are countless more characters available with a few clicks of the mouse. These include accented letters, non-U.S. denomination symbols and all manner of extra pictures and images, including hearts. You can use the Alt key in combination with other keys to make hearts, but there is another method that doesn't involve memorising character codes: the character map.
Open the "Start" menu and type "charmap" in the Start Search box. Windows XP users, open the "Start" menu and click on the "Run" button, then type "charmap" and press Enter.
Scroll through the character map until you find a heart symbol.
Click on the heart symbol and press the "Select" button, followed by the "Copy" button. This will copy the heart character to the clipboard.
Open or switch to the application in which you want to insert a heart. Press Ctrl-V to paste the heart. This will work in any box onscreen in which you can write or display text, including programs such as Word, Notepad, and Internet browsers.