Your dream seems to be deeply rooted in your feelings of regret, connection, and the complexity of relationships, particularly with the girl you have mutual feelings for. Here are some aspects to consider in interpreting your dream:

1. Feelings of Regret and Apology: Your immediate feeling of sorrow suggests that you are aware of your emotions and perhaps feel guilty about past actions or doubts toward this girl. This could reflect your desire to reconcile with her and make amends in real life.
2. Emotional Connection: The scene in the cafeteria, a social gathering place, indicates a desire for connection and communication. Sitting face to face and sharing a hug represents intimacy and a longing for closeness with her, suggesting that you value this relationship.
3. Conflict and Resolution: The initial conflict, where she is upset, portrays the tension that can exist in relationships. However, the resolution—both of you apologizing and embracing—indicates a hope for healing and understanding, as well as a desire to overcome misunderstandings.
4. The Cockroach Incident: This unexpected twist at the end may symbolize feelings of embarrassment or the intrusion of something unpleasant in an otherwise tender moment. It might represent fears about how your actions could be perceived or how delicate relationships can be when faced with unexpected situations.

Overall, this dream reflects your inner thoughts and feelings about this girl, the importance of communication, and the need to address unresolved issues. It may be beneficial to consider these emotions and, if appropriate, have an open conversation with her in real life to express your feelings and clear the air.