When having vaginal sex you only need to use lubricant (lube) if you're not turned on or wet enough. True or False? 9 Reasons Sex Might Hurt for Men WORTH IT Utah Sex & Relationship Therapy There are many assumptions people make about lubrication and what it means about their bodies. Most of them aren't accurate. Here's what Instagram Sex Advice: What is sex without lubrication? A pain, especially for many women or people with vaginas. If sex hurts, try lubrication first.