How old are you? People should just be straight up, if you want to know something then ask, you're never going to know otherwise, are you? You could blatantly ask her "So, are you interested in anyone?", it's not so difficult to do you know. You can beat around the bush or you can ask, whatever you decide - you're taking a risk. If you don't ask then you run the risk of missing out on something, if you do ask you may be rejected. But who cares, at least you'll know.
To love is to suffer. To avoid suffering, one must not love; but then one suffers from not loving. Therefore, to love is to suffer, not to love is to suffer, to suffer is to suffer. To be happy is to love; to be happy then is to suffer, but suffering makes one unhappy; therefore to be unhappy one must love or love to suffer or suffer from too much happiness. I hope you're getting this down.