Sex is fun until it all stops.

When you've been with a long time partner, you probably already have a post-coital routine that works for you.

However, with a fling or a new partner, there are things you shouldn't in bed.

Here are 5 things you should avoid doing after sex.

1. Don't act as though it was disgusting

Yes, sex can be icky but it's not an exorcism. You don't need to immediately run to the shower.

2. Sleeping immediately after

After men ejaculate, a hormone called prolactin is produced that makes them drowsy. Sometimes they succumb to this and immediately go to sleep. It's rather rude. Snuggle first then sleep.

3. Smoking

Some partners immediately reach for a lighter the moment the sex is over. Your partner isn't a makeshift ashtray. Enjoy the glow first.

4. Surveys

Please don't ask, "How did I do?" immediately after sex. If it was amazing, you will know. If it was mutually amazing, you will not be in doubt. When in doubt, kiss, cuddle, try for a second round. If the response is positive, you're in the clear.

5. Clean up

Don't immediately reach for your clothes unless you have that kind of arrangement. Don't hand over any money or leave some kind of "gift" either.