" I want to have sex standing up but I find it impossible. I’m 19 and I really like having standing sex.

The trouble is it’s a real problem for me. I get going OK but then it all goes wrong. "

It’s happened on three occasions with three different girls. They don’t seem to mind – but I do.

My mates seem to manage OK cos I’ve asked them. I feel like some sort of freak and I’m starting to wonder what the hell is wrong with me.

DEIDRE SAYS: There’s nothing wrong with you – but whether standing sex is a success often depends partly on the relative heights of you and your partner.

But what does bother me is your seeing girls as just accessories to your preferences – which has the kickback that having sex with girls who mean nothing to you has ended up with you feeling like some sort of freak.

Save sex for when you’re with a girl you really care for – and then the two of you will have the time, adaptability and sense of humour to make standing sex work.