Is my relationship with my brother weird???

Okay so my brother is in the army & is in town right now.

My brother & I are only 11 months apart & are very close. We have 1 other sibling who is 10 years younger than I am. We grew up with our dad & with our mom being really absent/toxic throughout our childhood. We’ve always leaned on each other. We’ve always been close.

I asked my husband why he hasn’t been trying to talk to my brother & he said he doesn’t really want to I asked why? What do you have against my brother? He replied with “I’ve always felt uncomfortable about yours & your brothers relationship”

Keep in mind I’ve seen my brother maybe 6 times since my husband & I have been together. Because he’s been stationed in a different state this whole time.

The reasons my husband gave me for feeling uncomfortable:

1. Your brother told you he had a threesome, it’s weird to tell your sister that.

(He told me this 4 years ago before he got married. He kinda laughed about it & I just said omg how gross! It’s not like we had a full on convo about details)

2. You guys smoked weed together

(This happened like way before me & my husband got together. I don’t smoke anymore. I was never big on smoking actually. We smoked WEED. Like is that weird?? I’m so confused)

3. Ready for this one.. we went to the store together!!! By ourselves. WHAT

My husband is set on his belief that we have a weird relationship & it’s seriously making me think about divorce.

This is the first time he’s ever mentioned anything like this.

The whole time my husband & I have been together (5 years) I had no idea he felt this way. I’m just in disbelief & pretty upset honestly