Is OTHER wrong in the post ? POST : Sorry if this is too long but I wanted to give a background to my feelings


My mom and dad got divorced when I was pretty young however I handled that well and I was fine with the idea of loving them both differently. I mostly lived with my mom and went to my dad for the weekends and honestly that was also fine by me.

After a while my dad started seeing this women who was represented to me as his “friend” and MY “friend” also. And please note that during the time I wasn’t capable of determining what was the difference between friendship and relationship. Therefore for the the longest time I thought they were just friends.

Fast forward to the day when my mom pulls me aside and starts talking about how my dad is actually in a relationship with this woman and that they like each other since they never bothered to explain it to me. And honestly I was pretty shocked but again I was ok with that also because I knew my dad was bad at explaining and expressing stuff and during the time I liked her girlfriend.

Sooo again fast forward to when I am around 13 my dads girlfriend tries convincing my mom to tell me that her and my dad are getting married but my dad is bad at talking so that she wants her to do it. As a result my mom gets irritated and tells them that it’s them that they are getting married therefore my dad should be the one explaining this to me. So my stepmom cones back home and a few hours pass, then we all start playing this game while its my dads turn to play she starts explaining how they’re getting married and etc. And my initial thought was happiness although it was a bit awkward that it was her telling me this and not my dad and that my dad just kept playing the game without really saying anything.
Like during the time I didn’t care and instead I just asked when was their wedding because I obviously wanted to attend. And she said it was a week later. During the time I didn’t know how to respond to that because I was shy and also was reluctant on how to show my feelings so I was just like “ohhh ok but my school starts next week...” and she was just like “Yeah well it’s not going to be crowded anyways it is going to be small and boring.”
Again I say NOTHING.Because honestly I just want to be nice. However then she starts talking about how her family actually doesn’t know I even exist because where she cones from it is NOT ACCEPTABLE to marry a man who already has a kid.

I realized how fucked up by this as I grew older and actually started to understand what was actually happening. However me and my mom moved to another country and I saw my dad like around a week a year as a result. 

2 years ago when I visited him we all had a fight because his wife was trying to hide me from her mom when all I was trying to do was to get my stuff and get out of there. But yeah so we all got into a fight his wife tried to pull me back into the house and ran after me when I left the house crying just to look good for my dad which good me even more mad. However again after 2 months my dad visited me and we solved our shit but I haven’t talked to his wife on the phone or anything since.

Fast forward to a few weeks ago ( I am 16 btw) he called me on the phone and we were talking about my life and what he was doing casually and he basically just told me that his wife was 7 months pregnant which I just replied with “Ohh great Im happy for you!” Then after when he hung up. I just started crying because initially I didn’t want a step sibling at all.
 
Tl;Dr : My step moms family doesn’t know I exist, she did not want me in her wedding therefore planned it in such way and my dad shows little to no reaction to this and tells me that her wife is 7 months pregnant on the phone. AITAS for not being ok with this and support him?
