Hi Kate
I cosleep with DS and the first couple of weeks DH slept in the spare room. Mostly because i wanted him to have a good night sleep for work the next day .
I dont mind him in the other room as it gives us more space in the bed so i dont feel like i am quished as DS can spread himself out!!
But DH came back into our bed from week 3 and wants to stay so that is fine too.

We have a king size bed though so we get a little extra room and it has not effected our relationship in either option at all.

It actually felt like i was dating again having him in the other room ... hehe... sneek in!