I have been in an open relationship for about 5 or more months now. The girl was never really into the whole relationship idea but i had always dopped hints that i wanted one with her.

Now today, she sent me a text saying that she wants to be my gf. I'm a little taken back by this and have come to you guys for advice.

If i say yes, and we start dating. What changes from being in an open relationship to a closed one? Is there anything i have to do to keep it healthy, etc?

(I have never been in a closed relationship before)