How to talk to my (21M) friend (20F) about our possible romantic/sexual tension?

Hi there,
So my friend (20F) and I (21M) have known each other for about a year and became close friends about 6 months ago. Our relationship is close and intimate, but it was never more than just being friends. I mean, I do find her attractive, but I didn’t want anything more, also because I was in a relationship of 3 years until a month ago.

Anyway, we saw each other a lot in the last two weeks, and yesterday we had a very intimate night together. We were at my place, drank wine until 5am, had a deep and personal conversation, and then went to sleep in the same bed. Nothing happened (this is not a decision you make at 5am), but it felt like something could happen. We’ve had intimate moments before, but this was the closest we’ve been, I think.

I think I should talk to her about this, but I also don’t want to make it weird between us. What if it’s all in my head?

Also, in case I’m misreading things, I don’t want her to think that I’m friends with her just because I thought that something could happen between us. This is not the case.

I don’t even know if I want a relationship with her, I just got out of a big one and being alone is good for me. But I also feel like there’s this elephant in the room that needs to be acknowledged.

So, first question: Do you think that there’s really something there?

And if so, how should I approach this conversation?

Thanks!

TL;DR- I feel this sexual tension between my friend an I and I don’t know if and how to talk to her about it