tbe
It is an abbreviation used for the term 'To be exact' used frequently on the internet (by chatting or instant messaging).
Example:
A: Do you think that Jane will come to my party tonight?
B: TBE undoubtedly. She said you are really cute.
A: Do you think that Jane will come to my party tonight?
B: TBE undoubtedly. She said you are really cute.