Hehe

[Justin Bieber]

muffled laughter, suggesting a sneaky aspect to that being laughed at, differs from lol in this way, which is a full on belly laugh.

[Tina]

A giggle. Not a laugh, just a giggle. Generally you say hehe after saying something cute, but it can vary.

[PussyCat]

it is a variation of laughter

usually a sneaky or creepy laugh

[Jessica]

hehe, different from lol or haha. hehe usually has some type of innuendo. it is a subtle way to flirt via texting or instant messaging.

[Little_Girl]

Widely used in China, similar to sounds interesting in some situations.Usually used by girls to guys. An exact explanation is I wanna say WTF but thats not the lady stuff and its too cruel to you.

[Sarah]

An alternative form of lol or LMAO to display a lesser sense of humour.