What type of bond is formed by two atoms that equally share one pair of electrons?

A covalent bond is a bond that forms when the two atoms share their electrons pretty equally. This is caused by the difference in electronegativity, or ΔEn. When the ΔEn is low, the bond is more covalent. If the ΔEn is high, the bond is more ionic.

12 is probably the typical age for a first kiss but i think its to young.

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.