AITA for locking my husband out of the house after I found out he was cheating during our family vacation?

I (33F) have been married to my husband, Marcus (35M), for nine years. We have two kids together — Emma (7) and Noah (4).

From the outside, our life probably looked perfect.

Nice house. Family vacations. Matching Christmas pajamas. All the social media stuff people think means a marriage is happy.

But over the last year, something between us changed.

Marcus became distant. Always tired. Always on his phone. He stopped laughing with me the way he used to. Conversations became short and mechanical, like talking to a coworker instead of a husband.

Whenever I asked if something was wrong, he blamed stress from work.

And honestly? I believed him because he works long hours and has a demanding job.

A few months ago, though, I started noticing little things that didn’t make sense.

He suddenly cared A LOT about his appearance. Expensive cologne. New clothes. Going to the gym twice a day sometimes.

He also started taking his phone everywhere.

Bathroom.

Garage.

Even to take the trash out.

One night I joked:

“What’s on that phone, state secrets?”

And he got weirdly defensive.

That’s when my gut started screaming that something wasn’t right.

Still, I didn’t have proof, and I didn’t want to become the paranoid wife digging through phones.

Then last month we went on a beach vacation with the kids.

It was supposed to be a reset for our family.

The first couple days were actually nice. The kids were building sandcastles, Marcus seemed more relaxed, and for a moment I thought maybe we were finally reconnecting.

Then everything blew up on the third night.

Marcus said he was going downstairs to grab snacks from the hotel shop while I put the kids to bed.

About twenty minutes later, I realized he’d forgotten his iPad in the room.

The screen lit up with a message.

At first I ignored it.

Then another one popped up.

“Wish I was in your room instead 😘”

My heart literally stopped.

I stared at the screen for what felt like forever before unlocking it.

Yes, I know people will say I invaded his privacy.

But honestly, something inside me already knew.

There were MONTHS of messages with another woman.

Pictures.

Videos.

Plans to meet up after the trip.

And the part that hurt most?

He complained about me constantly.

“She’s always exhausted.”

“She only talks about the kids.”

“I feel trapped.”

Meanwhile I was carrying almost the entire mental load of our household while trying to save our marriage.

I felt physically sick.

When he came back to the room, I confronted him immediately.

At first he denied it.

Then blamed me for snooping.

Then finally admitted he’d been sleeping with a coworker for almost eight months.

Eight months.

While kissing our kids goodnight every evening.

While holding my hand in family photos.

While telling me he loved me.

I started crying so hard I could barely breathe.

And his response?

“Can we not do this right now? The kids are here.”

THAT made me snap.

Because apparently cheating on your wife during a family vacation was acceptable…

but my reaction was inconvenient?

The next morning I barely spoke to him during the drive home.

The second we got back, I packed his clothes into garbage bags and left them on the porch.

Then I changed the smart lock code.

About an hour later he came home and completely lost it.

He was pounding on the door yelling:

“You can’t lock me out of my own house!”

I told him through the door:

“You shouldn’t have cheated on your wife in it.”

The neighbors definitely heard everything.

Eventually his brother picked him up, but ever since then my phone has been nonstop drama.

His family says I acted “unstable” and traumatized the kids.

His mother told me:

“Marriage problems should stay private.”

Marcus keeps saying I’m overreacting because he “never intended to leave” me.

Which honestly makes me angrier somehow.

Like I’m supposed to feel grateful he planned to keep lying instead?

But now that the shock is wearing off, I’m wondering if I handled it badly.

Maybe I should’ve waited until emotions cooled down instead of throwing him out immediately.

So… AITA?