True Love?

For those of you who have experienced what you believe to be true love, what is/was the hardest thing about being in love for you?
For me, the hardest part of being in love is that empty feeling that I get when I'm missing my boyfriend and it seems like nothing I can do can fill that "void" except seeing him and yet I won't be able to see him for a few more days.    Talking helps, but we don't have a lot of time to talk during the week so that's not as fulfilling and I still miss him. 


For those of you who are still looking for your true love, do you believe that you have a soul mate or do you believe that it could be any number of people?