So it wasn't me confessing but still turned out positive. I'd been seeing a girl for idk 2 months. We were pretty wild, watched a lot of porn togther, used toys, restraints, included her best friend a few times, talk about all our kinks. So one time while watching vids in bed she pulls up a video of a male dog just flat going to town on a girl and looked like she loved it. My gf at the time asked what I thought and I admitted it was sexy af. So then she showed me another kind of zoomed in a little. She gave me the phone and started blowing me. I was enjoying the show and blow when I realized the video was zoomed in. Zoomed out and there's my gf on all four getting plowed by her big male lab. I blew immediately and after she'd handled it we laid in bed talking about it and how it came about and she showed me her stash of pics and vids of herself. After that she started bringing her dog along. We split 2 years later but it stayed a regular, multi time a week thing until then.