When your partner is cheating, you might notice it if you really pay attention. According to Dailystar, here are 13 ways to know your partner is cheating. These 13 ways was provided by people on Reddit after someone asked "What are some signs your partner has cheated on you?".
1. "They start accusing you of cheating."
2. "Phone habits can change – they suddenly carry it around religiously, spend more time in the bathroom on it, start using a lock screen which doesn't show notifications, etc."
3. "A completely unrelated reason for needing to go on birth control is a big red flag."