My DP has always been a bit like you @futuredreaming , and to be honest it drives me up the wall.
Lets say we're looking for a new sofa. She picks one out, I'm not a fan, so I say so. I don't want to spend the next 10 years sat on a sofa that I find uncomfortable or looks hideous. So I pick one out, she's not a fan but won't say she doesn't like it, so we end up buying it.
6 months later we're looking for a kitchen table, and it all goes the same way until suddenly she's crying because everything we own is stuff that I picked and she never gets to choose. And we have a long conversation that I'll try to take her opinion on stuff, but that she needs to start fighting her corner too.
And then 4 years later we're in the same situation because nothings changed.
This happened 3 times in the first 12 years of our relationship, and we've now managed to go 5 years without it happening again because I've gotten very good at working out what she's not saying from her body language, and then teasing out what she really thinks over many questions.
And the really annoying thing is, that I care so much less about this stuff than she does. 99% of the time I'd happily be the one to compromise, I'd just prefer to at least try and find something we both like first.