Should I stay out of my adult daughters relationship?

My girl is 22 and getting married in March. Her fiancè is a nice guy but I just have feelings about him. I always think it's weird for a man to have a close friend that's a woman and he has a best friend that's a female. Maybe it's because my daughters father cheated on me but I just don't trust it. They are very close with each other and on TT together. They made TT where her fiancè is like who knows me better, my fiancè or best friend and he asked questions like what's my rising sign. He's extremely into astrology and so is his girl best friend. And she's known him since they were children so of course she got it right. I've seen her TT and she talks about my daughters fiance. She in one said that men need to stop getting mad when women say they would choose a bear and instead be a man a woman would choose over a bear and said that my daughters fiancè is the best human she knows and with all the abuse she suffered in her life at the hands of men she can safely say she would choose to be in the woods with him over a bear. They also all did a TT together and my daughter in it saying marrying my fiancè is also marrying his girl bestie and he was holding them both up and made me uncomfortable but my daughter said that one was her idea and she thought it would be funny so if it was my daughters idea ig I can't be too upset. We've talked about it and she said she trusts him and if he were to cheat on her with his best friend good riddance because it means he's not trust worthy in general. She's in their wedding. She was gonna be his best woman but she has gotten close with my daughter too so she's just going to officiate them. I feel weird. And have talked to my daughter about it several times but she just wants me to stay out of her relationship.