Thank you for your query at DoctorSpring.com
Since none of you have shown any symptoms till now, it is unlikely you will develop it. So he can travel. Prophylactically you both can start Tab. Doxycycline 100 mg twice daily for around 5-7 days. This will ensure the disease process ends even if it is in window period.
But it is unlikely you both will develop the same.
Let me know if i can help you further,