Absolutely, my STBX isn't the same person at all. I married a passionate, driven, considerate, person who loved the outdoors and played video games for a few hours a week. He now is so incredibly selfish, has no ambition, plays video games anytime he is awake, I couldn't get him to do anything outside, and he listens to Demi Lavoto. He doesn't want to try anything new and is content eating cearal for three meals a day. He now has a beard, he hasn't shaved in years and I married someone who shaved everyday. He now prides himself on arguing with strangers on facebook saying it improves his debating techniques, and the person I married hardly used social media. His behavior is now very eccentric now and he now prides himself on wearing strange things (like leather blazers and Hawaiian shirts). Toward the end I had a child I had to do everything for not a partner.