DW said about a year ago that lubricated condoms were really bothering her.  We switched to unlubricated condoms and lube.  DW LOVES this!!  There's no question she's enjoying sex more than ever.   I won't go into the details but our sex life has taken off big time.  The problem is that at 50 I can't finish.  I never had this problem before.  She's having the greatest experience of our married life and I'm starting to feel very anxious and stressed because I can't finish and I don't know what to do.  Maybe we're using too much lube but she's wild with pleasure and doesn't want to stop.  Any ideas here?  The stress of knowing I probably can't finish when I enter her may be making this worse.