I had sex with my girlfriend’s sister while she was ill upstairs – I couldn’t help it, she’s stupidly hot & came onto me

says: "If your partner starts changing their passwords, starts taking their phone everywhere with them, even around the house or they become defensive when you ask to use their phone it could be a sign of them not being faithful."

"You should also look at how they place their phone down when not in use. If they face the phone with the screen facing down, then they could be hiding something."

They start telling you less about their day

When partners cheat they can start to avoid you, this could be down to them feeling guilty or because it makes it easier for them to lie to you.

"If you feel like your partner has suddenly begun to avoid you and they don't want to do things with you any more or they stop telling you about their day then this is another red flag."

"Partners often avoid their spouses or tell them less about their day because cheating can be tough, remembering all of your lies is impossible and it's an easy way to get caught out," says Aaron.

Their libido changes

Your partner's libido can change for a range of reasons so it may not be a sure sign of cheating but it can be a red flag according to Aaron.

Aaron says: "Cheaters often have less sex at home because they are cheating, but on occasions, they may also have more sex at home, this is because they feel guilty and use this increase in sex to hide their cheating.  You may also find that your partner will start to introduce new things into your sex life that weren't there before."

They become negative towards you

Cheaters know that cheating is wrong and to them, it will feel good, this can cause tension and anxiety within themselves which they will need to justify.

"To get rid of the tension they feel inside they will try to convince themselves that you are the problem and they will become critical of you out of nowhere.  Maybe you haven't walked the dog that day, put the dishes away or read a book to your children before bedtime.  A small problem like this can now feel like a big deal and if you experience this your partner could be cheating," warns Aaron.