80 pounds in 3 months IS crazy. Maybe your body is adjusting to that huge change. Great job!!
I lost 20# in about 3 months, then stayed same weight for a month now. I took a 1 week vacation this month; I didn't go nuts but I was looser with the carbs and I did not exercise at all for a week (giving a bad knee a rest). But the belt is on a new notch and I'm not gaining, so I am being patient right now. I will change something if I don't lose any more weight in another month.
In my mind, it is all about permanent changes. This isn't a diet, this is a permanent way of eating and moving for me. I am focused not only on losing weight, but also on keeping off the fat I've lost so far and improving my fitness level.
height: 5' 10 1/2"
"Decide what to be, and go be it."