My "challenge" is I am not 18 anymore and not able to have sex all night, countless rounds of orgasms.. I now need some rest between and these rest periods increase with each time I have sex with my girlfriend

Hi Mark, Should I be having sex with my ex-girlfriend's mum? I went out with my ex for about eight months and even though it wasn't a bad relationship, it seemed to just fizzle out in the end. I met her mum several times within those eight months and although I can't say that I actually fancied her, but I did find her attractive and admired her.

It began when all three of us had too much to drink. My wife passed out, so we helped her to bed then opened another bottle. I love the woman who is now my wife but her sister is something else — curvy, sexy and cheeky. I’ve always fancied her

I am 19 and my best friend is 20. We are both training to be beauticians and started apprenticeships at the same salon when we left school. She met this guy when he came in for a free treatment offer last summer and they swapped numbers. He’s 23 and drop-dead gorgeous. I met him when they’d been dating for a few months and we got on really well. One day her boyfriend messaged me because he wanted to give my friend something really special for her birthday and he was looking for ideas of what she’d like.

I'm 19 and been with my boyfriend for two months now. We have been experimenting with our sex life, and he has asked if I would like to do anal. I've never tried it before, and I'm not really sure if I'm ready to try it out yet. What's your advice and suggestion.

Would you have sex in the downstairs toilet?

Hi Mark Should I be having sex with my ex girlfriends mum.

I had sex with my neighbour who lives down the hall from me, and I have been trying to avoid him ever since. It was a one-night stand a few weeks ago, as I was drunk from being on a night out with friends and felt like I needed some company. I bumped into him as I was going into my flat, and we started flirting with each other, I invited him in for a drink, and things led to us having sex on the sofa.

I've been married for the last three years, but have only managed to have sex three times. My husband has said that he prefers to play with each other, rather than actually have sex

HAVE YOU EVER HAD SEX WITH SOMEONE AND YOU JUST WANTED IT TO BE OVER

Hi Mark, I've been in my relationship for the last five years and I only have sex with my partner once a month, if that. This is not because I don't feel like it, but because of her personal hygiene issues.

Hi Mark, I've just discovered that my 22 year old daughter is in a polygamous relationship. I went to visit her in her new flat.