Really need advice

Ok so january this year me and my partner sat down togeather and booked a holiday togeather to America we're from uk so this is massive for us

It's my dream holiday

We fly out next month now all of a sudden he wants to buy a somthing else and invest on it I said no I would really love to go America now all of a sudden he's calling me ungreatful saying he don't wanna be with me and that he don't need me

We been threw hell and back togeather we are having ivf next year we been togeather 7 solid years and now all this is happening am I being horrible for not letting him invest and me wanting my American holiday or is he just being the jerk he likes to be

What should I do

Seriously thinking of packing my things and off I go

I feel like I have to say yes cancle the holiday and invest the money just to keep him happy but that's all I ever seem to do is keep him happy

I may be being a bitch but I do have a saying and this is also my holiday he said he's thinking of our future it taken us 3 months to save £1700 I said when. We get back America we will re save he laughed in my face like I said somthing funny to him

Fed up so badly 29 august we fly out why pile this stress on me now

What would you do