Yep. She ended up convincing me that it was just "talk" between those two, and that it never became physical. She said he boosted her ego and that's all it was. Toughest decision of my life, and it came down to like ONE minute before we walked down the aisle, that's when I decided to go through with it. I figured it's better to do it and find out for sure if it's a mistake or not, than to NOT do it, and always wonder if she was telling the truth or not, ya know?
We stayed married for 3 and a half years, then got divorced. After the divorce she admitted that her and that dude had kissed, once, and she maintains that story to this day. BUT, she is now married to that dude and has a kid with him lol.
Still though, we had good times and I'm glad I ended up going through with the wedding. Now I have no doubts or regrets.