I'm asking for advice. Should I attend this wedding?
The background is:
The bride is my sister, born Catholic, now Protestant. She is once divorced, married about 20 years and divorce finalized 8 years ago.
The groom is twice divorced.
He dated my sister around 30 years ago. They dated about 2 years. He was going through his first divorce at that time. At the end of the 2 year relationship, my sister found out he had 2 other girlfriends at the same time. He married one of the girlfriends about 1 year after my sister and he broke up. He and his second wife have 2 college-age children. He reconnected with my sister about 3 years ago through Facebook while he was still married to his second wife. They began a long distance relationship, talking to each other on the phone every day and traveling around the country to meet each other. His wife found out and filed for a divorce about 1 year after my sister and he started seeing each other. His divorce was finalized 5 months ago, and now he is engaged to my sister.
They both consider themselves to be upstanding, Bible believing Christians, following the Holy Spirit.
Catholics out there, what do you think? Would you attend?