Here's why:

* Electronegativity: Carbon and sulfur have similar electronegativity values. This means they have a similar ability to attract electrons.

* Sharing Electrons: Instead of one atom completely taking an electron from the other, they share electrons to achieve a stable outer shell. This sharing results in a covalent bond.

Specific Examples:

* Carbon disulfide (CS2): The carbon and sulfur atoms are connected by double bonds.

* Thiols (R-SH): In thiols, a sulfur atom is bonded to a carbon atom via a single bond.

Let me know if you'd like more information about covalent bonds!