Grown La Diva for several years in the GH - they're supposed to be an all-female variety, but as others have noted, they produce lots of male flowers (don't know whether the females ever get pollinated, but it doesn't seem to affect the fruits either way.)
I also get many aborted fruits as the summer progresses - hard to know why when growing conditions can be so variable, but I have read that they will give up setting new fruits when they 'think' they've successfully set seed.
Pick when small, keep feeding, cross fingers!