This is the exact same way I am. Before discovering the fandom, I thought I was 100% straight. Then, when I joined the fandom, I became a little bi-curious. Though it probably has more to do with the fact that I am pretty young and still figuring out my sexuality.
Since joining the fandom, I've met a few male furs that I've been able to make a strong connection with that has led to some sexual feelings, but still not strong enough to be able to form an actual relationship with. Just last week, however, I met a fur whose personality I completely adore :3 and I think I'm in love with him <3. He's let me know that he feels the same way about me, too. However, as much as I love his personality, I can't really ever see myself dating a guy in real life. Whenever I'm in public, I'm always checking out the ladies, and I don't really have any sexual fantasies about guys. Sometimes I look at guys and think, "Damn, he's pretty handsome", but I almost never think, "Damn, he's sexy".
Unfortunately, if I ever meet my fur friend in real life, which is very possible considering we only live an hour's drive away, I think that seeing him as a guy will probably be a turn-off and the strongest we'll ever be is best friends.
So overall, I think the fandom has opened my mind to being gay, and it may have caused a few more gay tendencies, especially online, but I don't think it has changed my sexuality to gay, or even bi.