I (29m) don't know if this is where I should place this, but I am in a bit of an emotional pickle. 

This woman I've known for years (30f) got married recently. A lot of people are saying she and her new husband look really happy together and it doesn't look like they will split anytime soon if ever. However, I know how this person is. She claims to be right most of the time and is treating this marriage like the happily ever after of a fairy tale, wanting to be a mother and being around friends that got married. In fact, her two bridesmaids got married right around the same time she did (1 a month before and the other just a few days before her wedding). So yes, visually this does seem like a wonderful, if not bizarre, dream come true. 

However, my friend, like me, is also on the Autism spectrum, and her anxiety and depression are much more severe than mine. When she posted on Instagram and Twitter about her wedding, she only mentioned the man that she loved once, making it more about how she could now say that she is a married woman after she feared her day would never come, and that now she could go on triple dates with her friends. I know some of you would see this as wonderful, but to me this screams trouble in paradise is coming for them, probably within the new year if not sooner. But when I tell people this, they either say that I need to let it go, or to just be happy for her like the friend that I am. I can't though. 

I know a lot of people view marriage as sacred, but there was so much divorce in my family history on both sides. My mom and dad, as well as my aunts and uncles, all ended up in second marriages or new relationships when I was a child. Even my maternal grandparents got divorced. However my paternal grandparents and paternal great grandparents stayed married. But those are exceptions to the majority I was familiar with. My cousin got divorced, which makes me worried about my other cousin and myself. This kind of puts me at a mental state where even though marriage is sacred, it doesn't always last, and sometimes you have to be prepared for that. 

Which brings me back to my friend. Her mom and dad both married multiple times before staying with each other in marriage. In fact her mother was married TWICE! 
But her grandparents stayed together forever, and because they were such an influence on her life she got married at their church and got a dress similar to her grandmother. She emulated that experience for herself. I'm worried she is heading for disaster. You know how soon she got engaged? Only four months after meeting the guy, and one month of being in a relationship with him. It may sound like heaven to some people but for me that is just NUTS! Hell, with how fast he proposed, her now husband sounds nuts too!

I openly told her about this and how she was not marrying the guy out of love. Too much? Maybe. She did block me for an hour on social media before unblocking me. I told her again, the day before the wedding, about my concerns. She said nothing but I didn congratulate her and all that like one is supposed to even though I felt divorce was extremely inevitable. We still chat and remain good friends if not best friends, but what people have told me and how they treat marriage is still weighing kn my mind.

With all this said, I don't know if this was a vent or not, but I feel I had to get it off of my chest. What are your thoughts about how I should handle people telling me what to think and how I can better communicate my views without starting arguments?