im confused

hi! i have been feeling a little bit confused about my sexuality as of late. I have considered myself bisexual (i have had a few romantic experiences with women and have fallen in love with one) for quite a few years now but i have only had one serious relationship in my life and it was with a man, but we broke up two months ago (we lasted two years and he the first person i had sex with). During said relationship he told me in various occasions that he felt like i wasn’t attracted him sexually and that he didn’t felt desired by me, and if i speak honesty, he was a handsome man and i liked how he looked but every time we had sex i felt uncomfortable and couldn’t wait for it to be over. For some time i thought maybe the problem was that i didn’t like sex with him specifically, but a week ago i had a casual encounter with another man, he was very handsome also, but i felt uncomfortable and wanted it to be over as soon as we started with him as well. It’s not like it didn’t felt good or that they were not attractive, but something does not feel right whenever i have sex with men, there is no flame from my end. I think is also important to mention that i haven never had sex with a woman before, but i have kissed and made out with a few and it has been amazing. Has someone else felt like this? what advice can you give? :( im really confused.