VP...
Your dp sounds very like my dh.
Dh was really quite anti-bf at first when he didn't see that there was much difference between that and ff. But when he saw how much it meant to be to bf ds, how healthy ds was, how easy it was to settle him with a boob etc. he kinda came round a bit. Still though he feels when I bf ds in public as he is older than a year (ds, not dh, although sometimes you'd not think it!) and he is scared of people's opinions.
Co-sleeping is a slightly different story.
We tried 3-in-a-bed with ds and dh didn't like it for various reasons so relegated himself to the other bedroom.
We then tried part time co-sleeping, so we would go to bed at ten, I would "dream feed" ds then get back into bed with dh until ds next woke (anywhere between midnight and four really - there is no pattern to his wakings!) and then I'd spend the rest of the night with ds.
Of course dh didn't like that because he wanted to stay up until midnight and I wanted to go to bed at ten/ten thirty latest (knowing I'd be up in the night).
So we're in separate rooms again now. Because I think ds needs me more right now than dh does. If dh doesn't like sleeping alone, he can sleep with me and ds.
Sex - well... I didn't feel like it much either, but not because of b/f - well, not directly. But I didn't much fancy this man any more who didn't understand how important b/f was to me... and a myriad of other things that had stopped me fancying him after ds was born; he seemed to have become so selfish for a start... or rather, had become no less selfish since the birth.
But to try and change the situation I did agree to have sex with him (and partly because he was intimating that he might have an affair / leave if I didn't!) but - and it's a big but - it doesn't seem to have made one iota of difference. He's still been acting like a total arsehole much of the time.
The other thing dh did was talk me into letting ds stay over at mil's now and again by expressing lots of milk. But instead of having a romantic night in and rekindling things... dh wants to go out on the lash!!
But I wouldn't give up b/f for anything or anyone. Because even if my relationship problems were to do with b/f, stopping would just make me resent dh so much that the relationship would definitely be doomed!!
I don't have any advice btw, you just asked for people to come and talk to you about their partners... and that's mine.