feel like we're breaking!

So I've been with my partner for coming upto 8 years. We have 2 beautiful children already and we've always been so happy. I'm 27 weeks pregnant with our 3rd baby and he's like a totally different person. He's not interested in me at all and shows me no love what so ever. Shit I don't even get a kiss goodnight anymore. He's told me he has no feelings towards this baby and he's finding me more unattractive with each week that passes and I get a bit bigger. I don't know what to do. I don't want this to break us, we've come through so much and always ended up stronger. Any advice on what we could do to try sort this mess out?