My fiance and I have a mutual friend who introduced us but at the time she had a major crush on him despite him telling her multiple times that he wasn't interested in her in that way. When we got together she was upset and stopped talking to me for a while, but we've since become friendly again and text and joke often. She's now in a relationship with a baby on the way. I'm debating if we should invite her because she is our friend but wonder if it would be rude? My fiance doesn't feel strongly either way.