We get this question a lot, so I figured I'd make a post to address it.
You may have a USB bluetooth dongle that says it works with Bluetooth LE on Windows 7, and may even be able to see/pair with the Bluetooth LE toys like Lovense toys or the Fleshlight Launch. However, there is no easy way for us to write code to access random Bluetooth LE hardware in Windows 7. The driver code for USB bluetooth dongles usually interacts with whatever Microsoft has put in the operating system, meaning it will work for audio devices (headphones/speakers), input devices (mice/keyboards), etc..., but there has been no way to access sex toy hardware. Microsoft implemented general Bluetooth LE support in the way Buttplug needs to work fairly recently in Windows 10. Microsoft has no stated plans of backporting Bluetooth LE support to Windows 7.
There is a chance we could use an alternative method to access Bluetooth LE on Windows 7, but it will be difficult to achieve and is not high on our priority list at the moment.
Note that some toys come with special USB dongles to work with specific toys on Windows 7. The Vorze Interactive Cyclone A10 is one such toy, and Lovense has one in development now for their toys. We plan to be provide support for these kinds of toys, as we know how to write code to access them.