One reason could be that she's not satisfied with her current relationship. Maybe she feels unloved or unappreciated by her partner. For example, if her partner is always busy and doesn't spend time with her, she might be tempted to seek attention elsewhere.
Sometimes, it could be due to a lack of communication in the relationship. If she can't talk to her partner about her feelings or needs, she may feel trapped. So, when an opportunity to connect with someone else arises, she might cheat. Also, peer pressure or the influence of her friends who have different relationship ethics could play a role.
One common reason could be pressure. For example, in academic cheating, if a girl is under a lot of pressure to get good grades from her parents or teachers, she might be tempted to cheat. Another reason could be lack of self - confidence. In a relationship, if a girl doesn't feel confident enough in herself, she may seek validation from someone else and end up cheating.
One reason could be boredom. If a marriage has become dull and routine, a wife might be tempted to seek excitement elsewhere, like in the case of a woman who was married for years and the daily life was always the same.
One reason could be boredom in the marriage. If a wife feels that her daily life with her husband is monotonous and lacks excitement, she might be tempted to seek something new outside the marriage.
Motion sickness is a very common reason. When a girl is in a moving vehicle like a car, boat or plane and her inner ear gets disrupted, it can make her feel sick and she may end up puking. Another factor could be pregnancy, but that's more relevant for adult women. For a girl, it's more likely to be one of the other reasons like overeating or having an allergic reaction to something she ate.
One reason could be that she is a hostage. In a thriller story, villains might gag her to prevent her from screaming for help and alerting others. For example, in a bank robbery, if the robbers take a girl hostage, they would gag her to keep her quiet during their escape.
Food poisoning is a common reason. For example, if she ate expired food or food contaminated with bacteria.
It could be due to her own insecurities. She might have been looking for validation from someone else. Sometimes, people who lack self - confidence may seek external affirmation through an affair. Also, it could be a case of falling out of love gradually over time and not having the courage to address the issues in the marriage. Instead, she found an escape in another relationship. However, none of these reasons justify cheating as it is a betrayal of trust.
In the fanfic, it could be that there are signs that Beckett is hiding something. Perhaps he has unexplained absences. He might say he's at work but Alexis can't reach him during those times. Also, he could be overly protective of his phone or personal space, which makes Alexis suspect that he's cheating.
There could be several reasons. It could be that she was attracted to the novelty of a new person. In a long - term relationship, things can become routine, and she might have been seeking that new - relationship - energy. Another aspect could be that she had some unmet emotional needs. If her husband was not supportive or understanding enough, she might have turned to someone else. Additionally, she may have had self - esteem issues and thought that having an affair would make her feel better about herself, which is clearly a wrong assumption.
One possible reason could be pre - existing relationship issues that were not resolved before pregnancy. If there were already problems like lack of communication or trust, pregnancy - related stress might exacerbate these problems and lead to inappropriate behavior.