What would you think of this?

@Jenni855 I'm sorry you feel that way. But I'm sure you realize, your husband is the one who calls the shots in his house, even when your son is over, though. I still don't see any examples of her playing mommy. The card should not have been shown to the child. I agree it was overstepping. But the card itself was supposed to be him and his partner, so nobody's business but theirs. So long as your ex-husband has any amount of custody, and the child isnt in danger, you really don't have any authority over what happens in his house. Even with your son there. That's the sad reality

@Jenni855 It may be....and who knows how long it will last....but for the sake of your son...and his relationship with ALL of you.....what is the most important thing to deal with. Have a meeting...PRIVATELY(maybe over coffee) with your ex and create some basic ground rules or things that are touchy, for ALL of you. Dont let it become a shouting match or a battle, but an adult mature conversation about what is best for the child...NOT pandering to any adult insecurities or uncomfortableness. There is no promise that he will like another man you bring into your home either....so setting boundaries will benefit everyone.

@FORMERLYbatovn I agree with that fully. Open communication will make it much easier for everyone. I'm sure they won't take the picture down, since it is their house. But setting boundaries that everyone can agree on creates consistency and stability for the child. Which should be the main goal of everybody involved

@Fantabulous Doesnt really prove that though does it? Son has only known her all of 5 months.

@Jenni855 no but it does show that she is embracing them being part of their circle, imo...not like some women who try pretend kids from previous relationships dont exist.

@Shayla Still find it odd after only 10 months.

@Jenni855 I would find it odd moving in so soon too, but it's not my choice.

@Hanging2 She will never be his mom

@Jenni855 not suggesting that at all.
By your reaction I think that is the real reason for your question. I am a step dad of 2 girls. Their dad and I get along great. We have been doing this for over 12 years and we both go to the kids fathers day breakfast each year. Even though I am like a father to those girls... I will never be their dad.
I accept this and I am grateful to have them in my life.
I hope you find some solace in my experience.
As long as you can accept this it will be easier