So if you take this molecule or atom and combine it with this molecule, this lewis base will tend to donate this pair of electrons to this orbital forming back our methane molecule. So now let's look at the methylamion. Now, we have a similar picture, but we have a pair of electrons within this two p orbital. And that means the pair of electrons will be found within this green positive region. And now we're no longer going to have SP two hybridized orbitals. In fact, this pair of electrons will act as if it was a bond because this pair of electrons will increase the negative charge, thereby increasing the electron density.