I did. One night we saw a documentary about how chickens are processed. Pretty disgusting. Next day, her dad had a crab feast and he was taunting her as he was throwing crabs into the steamer and they were trying to climb out. After that, I joined her
A few months later, I was in an accident and was taken to an Adventist Hospital - all veggie. After a few weeks of being offered food like 'meat' loaf (substituting cottage cheese for the meat!) I lost about 30 pounds.
When I got out, I could not gain the weight back on veggies and rice so I just started eating everything. Broke up with the girl too.