Can you have more than one true love?

No, it is not possible to have more than one true love, because the very phrase rules out that possibility. It is, however, completely possible to "truly love" more than one person (and, of course, by "truly love", I am talking about romantic love, not platonic). Society as a whole seems to like to cling to that notion of one true love, and refuses to be disabused of the idea. Don't be fooled, though...it is certainly possible to romantically love more than one person at a time.

Answer

No, I don't think you can have more than one true love in a lifetime. Once you meet your true love, if you are lucky enough to do so, you will understand there will be only one.