Dear 12353
No, you are certainly not a lesbian. Sexual images often have an arousing effect, and even stir up interest. This is one of the damaging impacts of pornography.
If I were to see a man having sex with a woman, and I fantacised about having sex with her, while it would be wrong (I am married), it would not make me a serial adulterer liable to have sex with every attractive woman.
Avoid those things that make you feel disgusted, especially pornography - of all types.
I hope this helps as a start.
Hi there. I am female and I have friends who are gay, lesbian and bisexual. It's funny because some of my gay male friends I find very attractive, however I am don't fantasise myself having sex with them. Same goes for the lesbian girls and the bisexual. I have been curious in my life and have had male and female partners and have come to the conclusion that I am definitely straight. If it repulses you to the point where you have fantasised having sex with the female friend of yours, then maybe experiementation isn't what you need. It's possible the actual act of having sex with females yourself may repulse you - but the idea of males and females enjoying the sexual act may be the turn on. So basically, you're not a lesbian, but watching girl on girl pornography could turn you on - that is, watching two human beings stimulate each other in a way that you can relate to but not engage in those acts in reality.
I am confident in saying that I am a straight female. But watching girl on girl pornography doesn't stimulate me - but watching two men does! I can't explain that one, but in any case, just because you may fantasise about other women it doesn't mean you're a lesbian. Enjoy your sexuality and don't over think by putting yourself in a pigeonhole or 'label' yourself as a lesbian. It is completely possible to appreciate the female form and even think about her sexually in a fantasy and NOT be a lesbian.