This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
Flash Lite will allow you to play Flash content on a mobile device, but it's not the same as having Flex on a mobile device. The kind of application development that Flex would give you on a mobile device is what JavaFX delivers (assuming you have a JavaFX-supported device, of course).
I cannot adequately describe how unbelievably cool it is to see your JavaFX desktop application running on a mobile device for the first time.
Sadly, mobile devices that support JavaFX are a little hard to find. Hopefully this will change within the next year.