Before I could regain my composure after my recent breast growth, David snatched the Chronivac back. "We'll worry about size later," he said, "But for now I have a few more ideas." I could do nothing but wait in fear while he continued to type on the device. Finally I saw him hit enter. My first clue for what he entered game as my chest grew heavier. I at first thought he was once again growing my boobs, but they appeared to be the same size. "I made a few changes," he said. "Firstly, I made your breast tissue twice as heavy as normal breast tissue. This is to constantly remind you of your new method of pleasuring me. I don't expect you to bear that weight on your own though, you're gonna need some new bras. However, I don't want you getting too comfy, so I made it that any bra you put on will be one cup size too small." I could only groan inwardly as he read off the changes. David continued, "Lastly, I want you to get some pleasure from our tit fucking sessions, so I upped the sensitivity of your nipples. In fact, now your whole boobs are sensitive like any sex organ. But, I made it so you can never come to orgasm from this. Our tit fucking sessions will be for my pleasure, and I don't want you to orgasm without my permission." I idly reached a hand up to support my new, heavy boobs and immediately found out there were more sensitive. A pleasant tingling feeling spread all over my new mammaries, and my nipples grew erect with arousal and started poking through my dress. David smiled. "I can see you are already enjoying the changes. Anything you want to say?"