Dreams involving romantic encounters, especially those that include elements of secrecy or infidelity, can often reflect inner conflicts, desires, or feelings about your current relationships. Here are some possible interpretations of your dream:

1. Desires and Temptations: The dream may suggest that you are exploring feelings of attraction or desire that are not fully acknowledged in your waking life. The presence of your wife in the next room signifies that you are aware of your commitments but are still tempted by the idea of emotional or physical intimacy with someone else.
2. Conflict in Relationships: The dream could reflect a struggle between the obligations of your current relationship and the excitement of new or potential relationships. This tension might indicate that you are seeking something that feels missing or unfulfilled in your current partnership.
3. Nostalgia and Personal Reflection: Being in your old bedroom could symbolize a return to past emotions or experiences. It might represent a longing for simpler times or a time when you felt more free to explore your relationships without the responsibilities you currently face.
4. Guilt and Conscience: The feelings of guilt that arise in the dream when thinking about your wife suggest that you are grappling with your conscience regarding fidelity and loyalty. This could represent a need to evaluate your feelings about commitment and what you truly want from your relationships.
5. Decision-Making: Your conversation with another colleague about having "two women on the go" may symbolize a decision you are facing in your life regarding love, commitment, or personal happiness. It suggests a need to consider what choices are best for you and those involved.

In conclusion, this dream might be encouraging you to reflect on your current emotional state, your desires, and the commitments you hold. It may be beneficial to engage in honest self-reflection about your feelings towards your wife and any other relationships you may be considering. If these themes resonate with your waking life, consider having open discussions with your partner about your feelings and desires.