They won’t share their phone passcode
There are plenty of reasons you need the passcode to your partner’s phone – like using it to look something up or answering the phone when their mum calls, Madden says. People who don’t have anything to hide won’t have an issue sharing their unlock code.
They like and comment on every single post a friend makes
This is definitely a thing that more and more couples fight about these days with everyone on social media. Liking and commenting on another person’s social media posts isn’t a definitive sign your partner is cheating but it can give you a lot of clues, Madden says. For instance, if your husband is liking all the bikini pics of the woman next door or your wife comments on every post her high school crush makes, it’s evidence they are spending a lot of time thinking about that person in a flirty way. Likes and comments often lead to private messages, she adds. Many people say that there were early warning signs on social media of cheating.
Find out what you should never post about your relationship on social media.
They have someone saved in their phone under the wrong name
Any time someone is lying, there’s a problem, Dr Patel-Dunn says. So if you notice that your spouse is constantly texting with someone whose name you don’t recognise, they’re either hiding their relationship with that person from you or they’ve saved someone you do know under a false name – often a name of the opposite gender, to throw off suspicion.