If that is truly how you feel, it's probably best not to pursue dating women. Or, at the very least, make that known up front to anyone you might interact with online. It would be disrespectual to go on a series of dates with an out lesbian unless she knows that upfront and can choose whether or not she is willing to put herself in that position. otherwise, she might feel like an "experiment" or like she is being misled. Because it's so common for bi-curious girls to sign up for dating sites and "try out" dating a woman, it can extremely difficult for out lesbians to find one another and avoid being with someone who is only "curious." Just make sure you state up-front what your experience and expectations are so that you don't lead on a lesbian looking for a relationship.