Do I need to replace both cv axels if one side is leaking only?

I replaced the passenger side cv axel on my 2008 Nissan Sentra also replaced both struts. Now the cv axel was only leaking on the passenger side not the drivers side. So I replaced the cv axel on the passenger side. Do I need to replace them in pairs or can I just get my tires aligned without having to replace the drivers side cv axel? Also the car has brand new tires