Relationships are sticky. Good lube may not solve your relationship issues, but it sure can help reduce friction — especially in the bedroom.  Liquid Silk is the very best available.  It's a creamy, light-weight, water-based/silicone hybrid that gives you the best of both types: long-lasting silkiness that never gets sticky, yet rinses off easily with just water, leaving no residue.  It's condom-friendly, non-staining, unscented, comes in a convenient pump jar and is a bargain compared to most lubes: The 8.45 oz bottle is available for $13-16 from drugstore.com or Amazon.com.