DP (DS's step-dad) and I plan to tell him in the next few days. I've had a knot in my stomach all day about this, as I have no idea how DS will react.
DP and I thought long and hard about whether or not to try for a baby together, but in the end felt that on balance it would be a positive thing for our blended family, for us as a couple, and ultimately for DS, even if at first he won't realise it.
DS's biological dad is local and loves him for sure, although is more than a bit dis-engaged/self-absorbed. DP is more of a dad to DS, and DS thinks a lot of him. They muck about together, do outdoorsy stuff, gaming, etc, and have formed a strong bond. DS (who lives pretty much with me) didn't notice when he didn't hear from his dad for over a week recently, but will ask where DP is when he's late getting home from work. So I'm positive enough that DS doesn't resent DP or anything like that.
But he has maintained, quite emphatically, whenever the possibility has arisen, that he doesn't want a sibling. He has said he'll move out if I ever get pregnant (to his dad's). He says a sibling will meddle with his things and take up lots of my time - which it will, but ironically, DS is growing up so fast (he's quite a developed 10) that he's increasingly doing his own thing, or with his mates, and I have to suggest spending a bit of time together because he's becoming so much more independent. So in reality, I don't think he'd notice as much as he imagines he would that I'd have my hands fuller with a little brother or sister. But this hasn't occurred to him; he just doesn't want siblings.
He's wonderful with his little cousins - I've seen how sweet and doting he can be, and he's protective of me and other relatives; has that sense of family loyalty. So I know he has it in him to be a great big brother and possibly to rather warm to the idea.
But I am dreading breaking the news, because I know he could feel (hopefully temporarily) very hurt and as though his world's falling apart. He will also share this sibling with his step-siblings, whom he doesn't have much time for, and I imagine might resent that link.
But at the end of the day, however he responds, I need to tell him, so I wondered if anyone has any ideas for how to deliver the news, soften the blow, etc? Grateful for any advice.
Thanks.