Is OTHER wrong in the post ? POST : I have known my friend for years and their family treated me as one of their own children and siblings. 

Last February (2018) my friend met a person on Tinder and they got along well. I liked their significant other (SO). I thought that their relationship progressed very quickly, and soon my friend really stopped seeing and communicating with other mutual friends and their family. I saw this and communicated my thoughts that they were moving fast and they disregarded me. oh well. 

It should be noted that this friend has treated me fairly poorly in the past, but I wanted to move past it, things like leaving their house to go shopping while i am driving over and making me wait outside for an hour until they got home, discluding me from mutual friend activities, and not telling me that they were moving in with our mutual best friend, when I had communicated that I was interested in living together. 

I learned from mutual friend that Friend and SO had secretly married. (Note: they married because SO is from out of the country and would have had to move back to home country after graduating college, and married in Dec. 2018) So Friend and SO had a secret wedding where mutual friend and one of SO's friends and friends parents were there and were all told not to tell anyone. 

I learned from Friend's dad that they had married, and from mutual friend that they had this "weird, secret marriage" (MF's words).
My initial reaction was absolute heartbreak. I felt that Friend didn't trust me or love me enough to share this news with me, possibly because I was apprehensive about the progression of the relationship. Mutual friend agrees that this was the wrong move.

I've been reflecting, and I also feel that I made their happy thing about me. But if they were happy and proud, would they not have made this more open?

AITA and WIBTA?