any time you have anything going on genitally but overall it's very unlikely your partner will contract hsv1 genitally from you.
unless you get obvious cold sores, no way to know if you also contracted hsv1 orally or not. what little info on this we have showed that anywhere from 1/4 - 2/3's of folks who contracted hsv1 genitally, also had it orally. Most folks who have oral hsv1, don't get obvious cold sores to know it. Since you were also kissing ( I assume ) around the time that you contracted hsv1 genitally, you could've contracted it orally also. In this relationship, it doesn't matter anyways since your partner has it orally. overall, no reason to think that from this point forward, if you kissed your partner when she had a cold sore that you'd then start getting cold sores.
no, you won't give yourself hsv1 orally, no matter how flexible you are. having it in one location gives you significant protection against contracting it on other body parts.
usually are not an issue. It's usually more romantic type kisses once your immune system is fully developed. http://www.ashastd.org/herpes/herpes_learn_oralherpes.cfm has terrific info on oral herpes for more info on that part.