My girlfriend confessed to sleeping with my friend after assuming I was cheating

DEAR DEIDRE: WHEN my girlfriend believed I’d slept with her best friend, she confessed she’d had sex with mine.

Now neither of us trust each other.

I’m 24 and she’s 23. We’ve been together for eight months.

She put her SIM card into my phone to transfer some pictures across.

The next day, she saw her best mate’s number in my contacts and freaked out. She wrongly assumed we were cheating.

When I told her she’d got her wires crossed, she accused me of lying.

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We had a row, and then she said she’d had a one-night stand with my friend a few months ago.

She’s since retracted this, saying she was upset and trying to make me jealous, but I don’t believe her.

I love her and want to make things work, but I fear we’re doomed.

DEIDRE SAYS: It’s not easy, but you can rebuild trust.

Tell her you want to start over with a clean slate.

That means talking openly and honestly, and not jumping to conclusions.

My support pack, Looking After Your Relationship, will tell you more.