All sex outside marriage is illegal, irrespective of any relationship you may have with your partner in the UK. Same-sex marriages are not recognised and all homosexual sex is illegal. If the UAE authorities become aware that you’re conducting a sexual relationship outside marriage (as recognised by them), you run the risk of prosecution, imprisonment and/or a fine and deportation. It’s against the law to live together, or to share the same hotel room, with someone of the opposite sex to whom you aren’t married or closely related.
The UAE is in many respects a tolerant society and private life is respected, although there have been some reports of individuals being punished for sexual activity outside marriage, including homosexual activity, particularly where there is any public element, or the behaviour has caused offence. This applies both to expatriate residents and to tourists.
Due to the laws on sex outside marriage, if you become pregnant outside marriage, both you and your partner could face imprisonment and/or deportation. Doctors may ask for proof of marriage during ante-natal checks. An unmarried woman who gives birth in the UAE may also encounter problems when registering the birth of the child in the UAE, and could be arrested, imprisoned or deported. To get a birth certificate from the UAE authorities, you must provide a marriage certificate and the authorities may compare the date of the marriage against the estimated date of conception.