When I was 16 I had a relationship with an older man who had a partner and child I didn't know about at the time.
I got pregnant and had a little boy as I turned 17.
I still lived at home, it wasn't planned and I didn't know I was pregnant until I was quite far gone so instead of adoption which my parents encouraged his Dad and partner brought him up.
He was happy but I spent a lot of his life regretting that I didn't keep him and struggling with the loss although I still had contact with ds at weekends so I was still part of his life.
I later met dh and we had dc, who then had their own rooms.
Ds is now 23 but at 17 he fell out with his dad and step mum and moved in with dh and I and our dc, so I put our dc in together and gave ds a bedroom.
At first I was delighted to have ds back but he's now 23 and has no plans to ever leave.
He has a job but it doesn't pay well, for his own sake I'd like him to make plans to try and make it on his own, he's been back here 6 years and it's been lovely but I'd like him to be a grown up now and plan his future without making him feel unwanted.
Our own dc were also only a baby and toddler when he moved in and as they're the opposite sex we really need his room eventually which sounds terrible but when we had the dc we had no idea Ds would be moving in.
A bigger house is not an option as we both work flat out to pay this mortgage.