'I don't regret it.' 7 women told us the one secret they've never shared with their partner.

We all have them. That one, tiny relationship secret our partner doesn't know about.

A cheeky online shopping splurge, a weird crush, or maybe a little fib about how many people you actually dated before them.

But some secrets are ticking time bombs. Big truths that could change everything if they ever came out — an affair, a hidden past or a life decision you came to on your own.

We spoke to seven women about the one thing they've kept from their partner — and why.

Because sometimes, keeping the truth hidden is necessary. And who are we to judge?

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"My 14-year lie."

I lied about how long my last situationship was before I started my relationship with him.

My husband knows this 'ex', and I said I'd only slept with them twice. In reality, it was nearly a year-long ordeal.

We've now been together 14.5 years. There was a lot of guilt at the start, but my now-husband used to be quite jealous of this ex-person. I knew that I was done with the ex-person, and my now current husband was my forever, so I didn't want to give him any doubt.

We were also very young, like 18! We were different people back then.

If he found out, I think he would be hurt, to be honest. But it wouldn't ruin our relationship now. I think it would just transport us back to that time in life, and he'd be more angry at 18-year-old me, not me now.

The ex-situationship was my childhood best friend, who, as hormonal teenagers, thought we loved each other, but really it was just sex. We loved each other more as family than as an actual relationship, but it was also just… fun for a while.

Once my current husband came into the picture, I knew straight away that he was my love, and my 'ex' was never going to be anything more than what it was.

But, given our long-standing relationship, of course, my husband was insecure about it. I therefore cut all ties. I think I'd handle it differently now, but at the time, that's what I thought was best.

"I blew up a marriage."

My husband's best friend was cheating on his wife — not with one person, but multiple other women. My husband told me not to tell anyone, stating it was "who he is, he will never change." I wasn't close with her at all; my husband and his friend liked to keep their friendship to "just the boys."

After his friend thought it was okay to bring someone back to our house after a night at the pub, I anonymously sent a text message to the wife with all the details, using a brand-new SIM/number. Within two days, she had packed up all her things and filed for divorce. My husband and his friend spent months trying to find out who sent the message to her, knowing they were in our close group of friends due to the large amount of personal details shared with the wife.

I've kept it to myself for 15 years. If my husband knew it was me, I am not sure if he would choose me over his best friend, even after all these years.

I did the right thing at the time. And would do it again.

I would hate to think what would happen if he found out, but I suspect it would involve my husband having to choose either me or his best friend to remain in his life.

His best friend has not had a serious partner since the divorce. He has loved the bachelor lifestyle, and his ex-wife went on to meet an incredible man and now has a beautiful family.

I feel like if I didn't tell her, he would have continued doing the same thing, and it would have ended later in their relationship, possibly after children, etc.

"I anonymously sent a text message to the wife." Image: Getty.

"I dated others first."

I haven't told my partner that I was still seeing other people in the first few weeks while we were dating. He has never asked, so I didn't tell.

I don't regret it. I think it doesn't matter now after 2.5 years together, and I'm glad I had some comparisons at the time to confirm my decision to stay with him.

"I loved his best friend."

I was in love with my husband's best friend before I fell for my husband.

When I was in my 20s, I met a guy whom we shall call B. We had a close friendship and I fell for him pretty badly, but he was with someone else (whom he later married). Through my friendship with B, I met his best friend M. We eventually got together and have now been married for almost 25 years.

I have never told my husband about the feelings that I used to have for B. I don't know if B ever told him either. We haven't seen B for years now. If my husband does have an inkling, he has never brought it up.

It was absolutely the right choice not to say anything. It would have been super weird and awkward if my husband knew.

Like I said, we have been married almost 25 years now and have a great relationship that outlasted B's marriage and our friendship with him.

"I was in love with my husband's best friend before I fell for my husband." Image: Getty.

"I know the gender."

I'm pregnant with our second child, and he doesn't want to know the gender (we had a surprise for our first, too). But when they called me with the Non-Invasive Prenatal Testing results, he wasn't home, and they asked if I wanted to know, so I said yes.

I've known the whole time, but he has no idea! Genius really. He didn't want to know, and I did, so everyone is happy.

I've kept it a secret now for three months with no slip-ups. I haven't shared because I'm respecting his wish not to know the gender.

If he found out, he'd probably be impressed I managed to actually keep a secret!

"My secret jab."

I've just received my first dose of weight-loss injections. I'm not telling anyone.

I think I will be judged by almost everyone around me if I was to tell them, and I don't need that in my life — just hoping my side effects aren't too horrendous, so no one clicks as to what might be going on.

"He hasn't noticed."

I have had filler and Botox. Over three years ago was the first time. He always says how bad the fish lips girls look and that he would hate to be with someone so plastic and vain, so I never told him.

I don't regret keeping it to myself. He didn't even notice when I got it, so it must look natural.

I think if he found out, he'd be like, 'Why?! You don't need that'.

I have really low self-esteem. I'm short, overweight and generally frumpy. It's one thing about my appearance I can fix easily.

Feature image: Getty. (Stock image for illustrative purposes).