AITA for exposing my best friend at her baby shower after finding out my husband was the father?

I (30F) have been married to my husband “Chris” (32M) for six years. We were the couple everyone thought would last forever. We met in college, built our careers together, bought a house together, and spent years trying to have a baby.

That last part destroyed me emotionally.

After multiple miscarriages and fertility treatments, I fell into a really dark place for a while. Chris always acted supportive. He came to appointments, held my hand when I cried, and kept telling me we’d get through it together no matter what happened.

Around the same time, my best friend “Megan” (29F) got divorced and moved back into town. Megan and I had been inseparable since high school. She practically became part of our marriage — always at our house, always texting us, always around for holidays and weekends.

Honestly, I trusted her more than anyone.

About a year ago, Megan announced she was pregnant.

She claimed it was from a short relationship with a guy who “panicked and disappeared” after finding out. I felt terrible for her, so I supported her through everything. I helped organize doctor appointments, planned her baby shower, and even let her stay at our house several times because she said she was struggling financially.

Meanwhile, Chris became weirdly invested in the pregnancy.

At first it seemed sweet. He’d ask about the baby constantly, help Megan carry groceries, build nursery furniture for her apartment, and insist on attending events “to support a friend.” Sometimes I’d even joke that he seemed more excited than the actual father.

Looking back now, I hate how blind I was.

A few months before the baby shower, I started noticing strange things. Megan would suddenly stop texting when Chris entered the room. Chris started guarding his phone like it contained nuclear codes. And whenever I mentioned baby names, they’d exchange these weird little glances that made me feel like I missed part of a conversation.

But I ignored every red flag because these were the two people I trusted most in the world.

Then three weeks before the shower, everything fell apart.

Chris left his Apple Watch at home while showering before work, and messages started popping up nonstop while I was sitting beside it. Normally I never snoop, but one notification caught my attention immediately.

Megan: “She can NEVER find out the baby is yours.”

I swear my entire body went numb.

At first I thought I misread it. I actually picked up the watch thinking maybe there was some insane misunderstanding.

There wasn’t.

The messages went back months.

Photos.
“I miss you.”
“Last night felt like a real family.”
“Do you think the baby will have your eyes?”

I felt physically sick reading them.

My husband had been sleeping with my best friend for over a year.

And the baby she was carrying — the baby I had been helping prepare for — was HIS.

I confronted Chris the second he came downstairs. He instantly knew what happened the moment he saw the watch in my hand. He started crying before I even said anything.

Apparently the affair started while I was going through fertility treatments because he “felt emotionally neglected.” That was his excuse.

Meanwhile Megan had apparently been secretly seeing him for almost two years while smiling in my face every single day.

I asked how long they planned on hiding this from me, and Chris admitted they were going to wait until after the baby was born before “figuring things out.”

Figuring things out.

Like I was just some obstacle in their love story.

I kicked Chris out immediately, but Megan kept blowing up my phone begging me not to ruin her baby shower because “the stress could hurt the baby.”

That sentence alone made me furious.

Because apparently MY pain didn’t matter — only protecting their secret did.

The day of the shower came, and honestly I planned on staying silent at first. I didn’t want drama. I didn’t want to humiliate anyone publicly.

But then I arrived and saw them together.

Chris had shown up “to help set up decorations.” Megan was standing beside him laughing while he rested his hand on her stomach when they thought nobody noticed.

And something inside me completely snapped.

During the gift opening, Megan stood up to thank everyone for supporting her “during the hardest year of her life.” She literally started crying while talking about fake betrayal and heartbreak.

I couldn’t take it anymore.

So I stood up and said:
“You should probably thank my husband too since he’s the father.”

The entire room went SILENT.

I mean dead silent.

Megan immediately burst into tears. Chris tried grabbing my arm telling me to calm down, but at that point years of grief, betrayal, and humiliation exploded out of me. I told everyone exactly how long the affair had been going on and how they’d both lied to me while I helped prepare for their baby.

One of Megan’s relatives actually gasped so loudly it startled everyone.

I left immediately afterward.

Since then, both families have been calling me cruel for exposing everything publicly at a baby shower. Chris says I “traumatized” Megan during her pregnancy and could’ve handled it privately.

But honestly?

I keep thinking about how they sat at my dinner table, slept under my roof, and let me play supportive wife and best friend while hiding an entire relationship behind my back.

So… AITA?