Ive recently started hating being a stepparent… no, the kid is not ‘my daughter too’ … did you ever let your partner know??

So my SD is 7 and I have been with my husband for 5 years, we now have a 7 month old together (bio kid). Since then I have started to dread the times SD has to stay over. She stays for three days nearly every weekend now and it’s horrible to say that I count the hours until she has to leave… she’s a great kid don’t get me wrong, and we get along fine but a few things have started to annoy me and I think things will only get worse as she gets older. Her BM isnt very nice and I can start seeing her attitude in SD. Also she’s super jealous of bio kid and wants her dad all to herself which is fine for now but what about later when baby gets older and wants to play with his dad too?? I don’t think I’m cut out for this.. honestly if I didn’t have our son I would have left… even though I really love my husband and can’t see myself with anyone else. A while back I told him I’d like more kids, and he said ok maybe one more because of his SD , that would make 3 kids and that ‘you know she’s your daughter too’ . In my mind I was thinking she’s like a daughter but she’s not MY daughter. Sorry but I’m finding it really hard to see her as ‘my own’, even though that sounds horrible.

My question is… did you ever make your feelings known to your partner? Or do you just suppress it?

Also if you have a bio kid, did having a SD or SS have an impact on their behaviour / family dynamic? I’m afraid that she’ll still be jealous when he’s older and wants to play with his dad too, and will be mean to him.

I feel horrible for even having those feelings.. because this kid did nothing wrong and it’s not her fault I’m feeling like this, it’s just the situation, now that I’ve had my own kid I don’t know if I’m cut out for it.. it’s really messing with my head and I feel really silly even writing this because I feel like I should have known…