The correct answer is swivel and turn.
Both of those words mean that something is turning, so if they are turning towards each other each time they are speaking, it means that they are in this particular stage of flirting. They aren't touching, synchronizing, or approaching each other, but rather just turning towards each other.
<span>The "overachiever" in Frankenstein" by Mary Shelly would definitely be Dr.Frankenstein himself. He brings a man to life scientifically, which kind of makes him an overachiever.</span>