Simpler options:
* hehe - This is a common way to write "heehee" in text and is often used to represent a light-hearted chuckle.
* hee hee - This is a more literal representation of the sound.
More expressive options:
* he he he - This adds emphasis and lengthens the sound.
* heeheehee - This is a more exaggerated version, conveying a longer or louder chuckle.
* hehehehe - Similar to the above, but with a different sound.
Other options:
* XD - This emoticon represents a laughing face, often used in online chat.
* :D - This is a simpler emoticon that also represents a laughing face.
* lol - This stands for "laughing out loud," which is a similar expression to "heehee."
Ultimately, the best way to write "heehee" in text depends on the specific situation and the tone you're trying to convey.