Don’t buy him flowers. It’s your bi brain talking. You don’t conquer a man the same way you do with a woman.
If he’s the one always paying, choose to cover at least for the meal. Tell him it’s your treat and insist.

You could but if youre uncertain on whether flowers are something he likes or not maybe just dont get them yet. Or do and find out haha. If he feels comfortable enough to be honest .
Your date sounds like a lot of fun i love going to museums and watching movies with my so. Im jealous, have fun n try not to overthink it

How is he going to dress? Sport coat and pants or Jeans and a T shirt? If he is going to wear a sport coat a boutonniere would be appropriate. Flowers might be a bit much.

Flowers would be a nice gesture that he should appreciate, but I’ve personally always found chocolate to be more enjoyable.

I wouldn't mind if a girl gave me flowers but I wouldn't carry them around I would toss them in the car and take them home, I suggest not buying him flowers he'll probably think it's weird and it'll throw the whole date off, be yourself and enjoy the time together and see how it goes.

They likely won’t let you bring flowers into the museum. Maybe a small thing of funny chocolates?

get a pack of dark chocolate so that both can munch on it seperately or mouth to mouth. ...it will bring him closer to you.. ...
I am surprised that he should got a silky nut slab for you on first date