The Chariot in the tarot is a sign of movement and change, but also of resistance. In this case, the resistance can be interpreted as a refusal to get back together with your ex. The card indicates that you should be ready to move forward with your life, without looking back.
Reversed Five of Pentacles speaks of the past, nostalgia and lingering feelings. The card suggests that you are still having feelings for your ex boyfriend, so there may be a chance to get back together. However, it may not be a good idea: you may find yourself in a situation similar to the one that led to the initial separation.
Seven of Pentacles in tarot suggests that you need more information before making a final decision. You need to take into consideration all the factors involved in your relationship and weigh them carefully before deciding whether or not to get back together.
In conclusion, the tarot says that there is no clear-cut answer to your question: the final decision depends on you and the information you have available. The cards suggest that it's not a good idea to get back together with your ex boyfriend without first making a thorough assessment of the situation. So, the most likely answer is "No".