Girlfriend's so huge there's no need to fatten

I've just started dating a SSBBW, and haven't yet had the courage to ask her how much she weighs but she's really huge, maybe 25-30 stone, don't really know. I've been out with big girls before, but it's the first time I've dated a SSBBW.

The thing I wasn't expecting is that because she's so huge already, I don't seem to have any desire to fatten her like I have past girlfriends.

This is quite weird for me, my last partner put on around 5 stone in the four years we were together. I don't believe I was consiously trying to fatten her, but it's probably a lot easier to put on weight when you're living with a feeder who loves fat girls.

Anyway, it's different with this new girl. I actually don't think I would want her to be any fatter. Think I've found my upper limit of desired fatness. Anyone else found this?
16 years