It is essential to respect people's privacy and refrain from engaging in any activity that may violate trust or breach someone's privacy rights.
Monitoring someone's messages, calls, or any form of communication without their consent is unethical and can be illegal in many jurisdictions. Trust is a fundamental aspect of any relationship, and invading someone's privacy can lead to severe consequences and damage the trust between partners.
If you have concerns or issues in your relationship that require open communication or trust-building, it's best to talk to your girlfriend directly. Honest and respectful communication is key to resolving any conflicts or doubts you may have.
Remember, healthy relationships are built on trust, respect, and open communication. If you feel the need to monitor someone's messages or calls, it may be a sign of deeper issues in the relationship that need to be addressed through conversation and possibly with the help of a professional counselor or therapist.