Friends 23 years old: I have sex with my fiancée's sister and...

A 23-year-old boy confessed to The Sun that on the night of the engagement, she had sex with her sister.

He says that since that night he's had sex with her every time they can and is falling in love with her.

But he says he doesn't know what to do until he lives with his fiancée and loves her.

His full letter:

I'm having sex every time I get the chance, with my fiancée's little sister.

I can't resist her, but I love my girlfriend.

My partner and I met her at college. I'm a graphic designer and she works at the bank.

I'm 23 and she's 24.

We finally bought a flat together, and we're thinking about creating a family.

Things went great and I proposed to her. My girlfriend was on the moon and we planned the engagement party.

We had a good time with family and friends. My girlfriend went to bed by 1.

Everyone went, leaving her sister and me to clean up the house.

She's great, 19 years and she's in college. We started talking about the evening and plans for the wedding, until she said she always wanted to have something with me.

I was shocked but I was a flirt. I turned to her and said: Or do you think about it?

While it was launched into my hands.

We had some more drinks and then we had amazing sex in the waiting room.

My fiancée was out every morning and when her sister came to me from her room, I couldn't resist and had sex with her again.

We both said it shouldn't happen, but we agreed it was wonderful.

A week after that, my fiancée went to training. The first night I was watching a movie until her sister showed up with a bottle of wine.

I invited him in and the inevitable happened. We're having sex wherever we can and I'm falling in love with her.

I know I have to stop this close, but I'm very fond of it. I thought about breaking up with my fiancée, but I don't want to lose her.

The psychologist's response:

You're walking on a dangerous line and you know that. Tell your fiancée the truth will be devastating, and it will be devastating in the family.

Looks like there's a resemblance between your fiancée and her sister, so she's attracted to you, but you can't have both.

Be fair and tell your fiancée's daughter that the relationship is over, or at least until you have solved the current connection.

You don't have to get married until you're 100 percent sure you love your fiancée.

If your relationship is over, you must wait a long time to be with her sister.