The guy I’m seeing sometimes calls me ‘dude’. I’m a girl. He knows I don’t like it ?

Does he do this on purpose because he wants to make sure that we are just in a causal situation? 

Thing is he wants to go on holiday with me. That too not just for a weekend. But for at least 10 days 

And he’s choosing really expensive hotels with a spa and pool and it’s 5 star 

He knows I like him (at least I have expressed that in the past anyways but now I’ve stopped telling him how I feel)

We talk pretty much every day. He initiates a lot more than ever before and it’s been consistent 

We haven’t had the talk of where this is heading 

Sometimes he also makes jokes that he’s taking me on a honey moon or that he will propose to me (these are just jokes obviously and I know that he’s not at all ready for that yet) 

But I’m trying to ask is why is he calling me dude yet at the same time why does he want to go on this fancy holiday with me? 

We know each other very well enough and we have slept together several times and have been really coupley for the last 4 months I would say without exactly having the title. We hold hands, he cooks for me. He always stays over after sex sometimes he stays till the evening of the next day and so on .. 

I don’t know when it’s friendship and when it’s more than that anymore