Guy friend feels attached to me. ADVICE.

Hi! 👋🏼

I have a guy friend that I have been friends with for about 3-4 years. We always have always had playful banter and connect really well.

Recently, he messaged and told me that he feels attached to me. Sometimes we playfully joke around like this, but this time it felt different. So I asked him is he was serious/if it was for real. He replied saying yes.

I have never had something like this before and was wondering any advice? Or if you have experienced a guy stating this to you before and what it actually means?

Anything would help!

Thank you 😊