Can anyone relate to this or something similar?

im young 22 yrs old, i had extraordanary cardio and was a boxer, I trained everyday, ran everyday, exercised tremendously everyday, never used weights.i worked my way to doing 1000 push ups a day, 1000 body squats, etc.. I weighed 140, like my idol julio cesar chavez,and i was never knocked down in boxing. THEN it began, my girlfriend got pregnant, my fault too, but she admitted that she did it on purpose so she could stay with me, I accepted ofcourse and we married. I couldn't box anymore so i left all that stuff and entered a gym and worked there. I began lifting weights and with TREMENDOUS effort i ballooned to 175 pounds of muscle, I wanted to bodybuild and stuff. My wife never interfered AND THEN IT HAPPENED. She became like a little girl and nags all the time, and now im a fat *** that weighs 225 pounds. She ruined my life. I let her do everyting, finish school, etc... and she could'nt let me be a bodybuilder or get my personal trainer license. Im a failure, I'm fat and feel so depressed. When i tell her i'll be back im gonna go run, or im gonna hit the gym(which is 1 day out of the week) she insists and says no. then i leave anyways and feel bad and can't workout right. Why is my wife this way?