I think I've mentioned on here before about how my wife got fat. When I was in law school she worked full time and I did all the house chores (including cooking). I had only ever cooked for us occasionally before that and if always cooked for me (6'2" male). After a few months of meals and portion sizes designed for a 6'2" guy who runs and lifts weights my 4'10" wife who does a bit of yoga three times a week ballooned up quick. Her snacking on confectionary at work didn't help either. We had a conversation about it, figured out what the problem was and she downloaded My Fitness Pal and got to work. Then we found out she was pregnant. Didn't stop her. She still ran with me every day and lost all the weight during her pregnancy. Got pregnant while fat, came out of birthing suite looking fit as. Triggered everyone. Very glad I didn't just dump her and move on.