
I think it’s completely possible for either one. While I don’t really believe in people “changing” sexualities, I do think that you could either be losing interest in men or still bisexual.
You see, (and this is just my personal opinion) I know of women in the LGBTQ community that believe sexuality is fluid and you should ‘go with the flow’. When they feel that at a certain point in their life they are interested in women and only women, they identify as fully lesbian. At any point this could change, and they could identify as bisexual. It all depends on your feelings at different times in your life and who you could see yourself being with. If in 2009 you feel like you could date a man or a woman, yet two years later you’re finding yourself only attracted to women, that’s completely up to you what you want to identify as, if you want to at all.
Remember that last part as well. While some people strive for identification, words that finally describe who they are as people and bring on a sense of belonging- it isn’t like that for everyone, and it doesn’t have to be for you if you don’t want it to be.