The difference between dating a woman versus a man is insane. Why is this?

So I (24F) am bisexual. I strictly dated men before realizing that I was bisexual and it was kind of awful lol. I was so anxious and irritable all of the time.

I’m dating both men and women causally now after being single for 8 months. When I date men, I feel terrible. I’m so anxious, irritable and feel overall miserable. This sucks as I do love men and find them super attractive.

When I date women, I feel amazing. I still feel nervous, but it’s an excited-nervous feeling. I also feel so light and happy too.

It’s insane the difference I feel when I date women versus men. Why is this?