The Crush Reaction Theorem - states that "in most cases, the summation of your feelings to your crush and your crush's feelings to you is equal to zero."

In mathematical,

Or simply,

x₁ + x₂ + x₃ + ... x_n + y₁ + y₂ + y₃ + ... y_n = 0

where:  x = your feelings to your crush
               y = your crush feelings to you

Example:

You like, idolize, and admire your crush very much.

Then, let x₁ = like, x₂ = idolize, and x₃  = admire.

Using the equation,

x₁ + x₂ + x₃ + ... x_n + y₁ + y₂ + y₃ + ... y_n = 0

Substituting x₁, x₂, and x₃ with "like", "idolize", and "admire" respectively,

like + idolize + admire + y₁ + y₂ + y₃ = 0

Equating variables with the same index to zero,

x₁ +  y₁ = 0

like +  y₁ = 0

y₁ = - like

x₂ + y₂ = 0

idolize + y₂ = 0

y₂ = - idolize

x₃ + y₃ = 0

admire + y₃ = 0

y₃ = - admire

Substituting the arrived value of each y to the equation to prove it is equal to zero,

like + idolize + admire + (- like) + (- idolize) + (- admire) = 0

like + idolize + admire - like - idolize - admire = 0

0 = 0

Then, using vocabulary notation for each value of y,

"- like" = dislike

"- idolize" = dis-idolize

"- admire" = dis-admire

Therefore:

Your crush dislike, dis-idolize, and dis-admire you whatsoever.

Also, therefore, this theorem simply states that "in most cases, the feeling(s) does your crush have for you is/are the negative or opposite of what you feel(s) for him/her."

*Note: This theorem, as stated in its definition, applies in most cases. However, if this doesn't coincide in your case, then lucky for you, else, it's normal in the sense of this theorem.