Help with Astarion Romance Please!

So I just made it to Act 3 and Astarion told me I was nothing more than a protector and that there's no more us. Yet when I talk to him he calls me beautiful and such. Like do I redo some stuff? Is he not dating Tav anymore? I want to romance him but don't know if this means a break up or if it's just how he acts at first. Also I did not accept any romance scenes from other characters. Anybody know what's up?