A British woman writes into the UK Mirror's resident sex doctor about her new boyfriend's lack of ejaculation during sex. Diagnosis? Don't panic:

There are many reasons why he might be finding it hard to climax.

It's not just women who get first night nerves. There is a lot of pressure on men to perform between the sheets, particularly if the relationship means a lot to them.

It's easier for women to hide their nerves in bed and allow the man to take the lead. Put yourself in his shoes. He knows that you've had a difficult run of relationships and is probably feeling the pressure to make sure he doesn't let you down in the same way. Give him time and when he feels more confident in your sex life, he'll perform without any problems. If the situation doesn't improve he might be suffering from a condition called retarded ejaculation.

Men with this disorder enjoy sex and get satisfaction but just can't reach climax. It can be a distressing problem and he's probably had the same issue with previous girlfriends.

Retarded ejaculation can be caused by a variety of factors.

Hidden feelings of guilt or fear about sex that may go back to childhood may be holding him back. He may not even recognise the complex emotions at work.

Alternatively, health problems and prescribed medications can interfere with ejaculation.

If you like this man then don't give up on him - give him the support and patience he gave you.

If you feel confident, find a time when you're both relaxed and bring up the subject. Listen to what he has to say and give him time if he doesn't feel ready to talk. (Source)