Tracey Cox says the frequency will naturally vary for different couples; It's highly unusual for long-term couples to have sex every day ; Research. So are you having enough sex in your long-term relationship? Though a new relationship sex -glow is irresistible, being exhausted at work all day every day is not. Most of us aren't champing at the bit for sex at all times. We all 3. People In LTRs Have More Sex Than Single People. "It's normal to think. Me and my boyfriend are in a very happy, exciting relationship. We have been together less than a year but are making plans for our future.