[Mike]

Remember KISS.

char activated = 0;

if(switch == 1) // If we told it to change states
{
	if(activated == 0)
	{
		relay1_fwd = 1;
		relay1_rev = 0;
		activated = 1;
	}
	else
	{
		relay1_fwd = 0;
		relay1_rev = 1;
		activated = 0;
	}
}

Voila.