I was engaged.. mostly happily. I went out for my 5 year class reunion.. only my 3rd or so time at a bar.. EVER. I got trashed.. drug my fiance to an after party at someones house and ended up in the bedroom with the host of the party. While we didn't do all we could have, it was still far more than should have ever happened. We split up the next day, and I gave my engagement ring back. I will never forgive myself for this. Still to this day I get very emotional about it.