It's essential to remember that I can't diagnose anyone with a mental health condition.
Feeling anxious or worried in a situation like this may not necessarily be a sign of paranoia, but it could be a manifestation of various emotions and concerns. Your friend's feelings may stem from a mix of guilt, fear of consequences, uncertainty about the future of the relationship, and even a sense of moral conflict due to being involved with a married person.
Paranoia typically involves irrational and persistent beliefs that others are out to harm or deceive an individual, without substantial evidence to support those beliefs. While your friend may feel anxious about the possibility of the woman's husband showing up, it's essential to distinguish between legitimate concerns about potential consequences and actual paranoia.
If your friend's worries and anxieties significantly affect his daily life and emotional well-being, it would be advisable for him to seek support from a mental health professional. A therapist or counselor can help him explore his feelings, address any underlying issues, and develop coping strategies to manage his emotions more effectively.
Additionally, being in a relationship with a married person can be complicated, emotionally challenging, and ethically questionable. Encourage your friend to reflect on the situation, consider the potential consequences for all parties involved, and think about what he truly wants from a relationship.
It's also important to remember that your friend's actions may have implications for the woman and her marriage. Ethical considerations should be taken into account, and seeking support from a professional can help him navigate these complex emotional waters.
Ultimately, the best course of action would be for your friend to seek guidance from a therapist who can provide a non-judgmental space to explore his feelings, motivations, and concerns more deeply.