Add stability and not being a burden. I'm not super thrilled with the wording on that last one but hopefully you'll know what I mean. It will be different to each woman as it depends upon her personality, her life and support systems, and her circumstances to a great degree. Basically what I'm saying here is that your presence in her life can't drag her down, whatever that might mean for her, even if the "thing" might actually be a good thing under different conditions.