The mismatch: The two of you don't measure up.



If there's a significant height difference between the two of you, furniture can be your best friend. If she's taller, try lying on an ottoman or a small bench and have her straddle you. That way, she can still have her feet on the ground, Haltzman says, "giving her leverage and flexibility." Or, if you're taller, "try holding her up and pinning her against the wall," says Brian Zamboni, Ph.D., a sex therapist and clinical psychologist at the University of Minnesota.