I would wait until my cock shrived up and rotted away for the girl i am with now. Luckily, she didn't want to. LOL. In general, i would only wait until it was a serious relationship, but, if the girl i was with wanted to wait i would.
If you really wanted her in your life as your wife, means if you really love her and care for her feelings. then you must wait till the right time. anyhow till then you must keep your mind distracted to other things. after all sex isn't everything. you must value your relationship.