In this day it is important to ask your S/O about his/her sexual past... as far as emotional - well that is something that will eventually come out as you each get to know one another.

I wouldn't call up an old girlfriend/wife...it isn't that important. I am going to learn about who I am with on my own without anyone else's perspective, which, btw could be entirely wrong for the current situation.

__________________
A blessed thing it is for any man or woman to have a friend, one human soul whom we can trust utterly, who knows the best and worst of us, and who loves us in spite of all our faults.