My boyfriend and I have been together for a little over a year and recently we have noticed that I'm having trouble staying wet during sex. In the 10 months that we've been having sex we've never had this problem until a few weeks ago. I can still get wet easily but about halfway through sex I loose my wetness. We haven't changed condom types or brands, I haven't changed soap or laundry detergent. Is there anything I could be doing to cause this? Or is there a way to help prevent this (besides using lube)?"