The reversed Five of Pentacles indicates that your physical health is currently compromised due to the situation that has arisen. You may feel weak and exhausted from the stress and uncertainty that cheating brings.
The Six of Wands can mean that you are dealing with your emotions in a proper way. You're aware of your feelings of anger, disappointment, and sadness, but you're doing your best to deal with the situation calmly and with understanding.
The Eight of Pentacles indicates that you have the inner strength to overcome this difficult situation. This doesn't necessarily mean that you have to forgive your partner, but rather that you will have the inner strength to decide how to proceed.
In conclusion, the cards seem to indicate that you have the inner resources necessary to deal with this situation. However, while you may be tempted to forgive your partner, the final verdict will be up to you. The answer to the question is therefore "No".