For me, the answer is "yes". As a kid, I sucked another boys cock, because he asked me to. But as a teenager, my total objective was females, and finally at 19, I lost my virginity. Sex with women was always wonderful, and I enjoyed them thoroughly for the next 40+ years. However, from time to time, I would think of my first homosexual experience, and wondered how a man would be. During this time, there were 3 men, who I would have liked to have sucked their cock. I never could devise a way to see if they might be interested. Also, at that time, I was married, and still am. So, the desire passed.
By my late 60's, sexual desire had passed, but in my early 80's, I discovered that men my age still had sex, but with other men! Realizing that I always had a latent desire to have sex with men, I acted on it. I found that homosexual sex was completely satisfying for me, and enjoy engaging in it with other. men. I have no intentions of stopping.
However, I did wonder whether I was gay, or bi-sexual so I experimental by watching gay, and straight porn.. I found out that sexual activities with both men and women excited me greatly, but sex with women was not realistic at my age, whereas, with men it is!.
So, my answer to the question is; yes, as I aged, I found myself liking sexual activities with men, while still being excited by women. That is described as "bi-sexual".