Did I move too fast on our very first date?

I really need honest opinions because my friends are split right down the middle.

I'm a 31-year-old nail tech, and about a month ago I met a guy through mutual friends. We talked every day for almost three weeks before finally going on our first date.

Dinner was amazing.

We laughed the whole night.

There weren't any awkward silences.

It honestly felt like we'd known each other for years.

After dinner we walked along the beach for almost two hours.

When he drove me home, I invited him inside.

One thing led to another, and yes... we slept together on our very first date.

I wasn't drunk.

He didn't pressure me.

It was completely my decision.

At the time, I didn't regret it at all.

The next morning he kissed me goodbye, texted me that afternoon, and even asked if I got home safely after work.

Everything seemed normal.

But after that week, his messages slowly became shorter.

He still replied.

Just... not the same way.

Now it's been almost two weeks since we've seen each other.

He says he's been busy with work, and maybe that's true.

But part of me keeps wondering if I ruined everything by moving too fast.

Some of my coworkers tell me that if a man truly likes you, sleeping together on the first date doesn't change anything.

Others say I should've waited because some men lose interest once there's no more mystery.

I honestly don't know what to believe anymore.

I'm not ashamed of what happened.

I wanted it too.

I just keep wondering if I confused physical chemistry with the beginning of a real relationship.

So I want to ask this community.

If you were in my shoes, would you reach out one last time and ask him where things stand?

Or would you accept the silence and move on?

Has anyone here had a relationship that actually started this way and lasted?