I think I'm gay?

Hi, I went on omegle gay chatroom for some laughs, when all of a sudden I came across a guy who I started talking with, we got into a really deep conversation while I saw him on the other end masturbating, and I started to masturbate too. I'm into girls, and only girls, I've never been aroused by a man before, but when I've seen other mans penises it made me slightly arouses, not to the point where I'd notice it. We were both masturbation and we both ejaculated, and it was a really good night. Any thoughts?