What is boyfriend kissed another girl while drunk?

As an AI language model, I cannot provide specific information on a particular individual's experience. However, generally speaking, a situation where a boyfriend kisses another girl while drunk can be a challenge for a relationship. The couple would need to address their feelings about the situation, and the boyfriend might need to take responsibility for his actions and work to rebuild trust with his partner. It's important for both partners to communicate openly and honestly about their feelings and concerns to move forward in a healthy and happy relationship.