I’m straight but sexually attracted to women?

Apologies if this is not the right place, and I don’t mean to offend anyone.

I’ve just turned 20 and am becoming more and more confused. I’m finding myself becoming increasingly attracted to women, but from what I understand only sexually?

I have always questioned my sexuality, however have always considered myself straight, and just got out of a three and a half year relationship. I LOVE men (I’m sure you all don’t hear this that much). I also have never had any experience with women.

I have been in the military for a little while now and have encountered many lesbian girlies, including one of my best friends. I can’t articulate it, but I find myself so conscious of how I speak/act? I find myself unknowingly trying to make a good impression to them I suppose?

Recently however, I have recently started talking to an older woman online and I feel something I’ve never felt before. I am obsessed with our dynamic and genuinely haven’t been this horny/worked up for someone in an EXTREMELY long time. I am so so confused. She has a husband and they are swingers, but I am only interested in her.

I am definitely straight from my understanding, as I don’t know if I could be romantically to women.

I just don’t know if it’s weird to have this attraction. I wonder if I am so desensitised to other facets that I this is just a thrill for me? Like I said, I have definitely concluded I am straight, and feel I am in the stage of life where I should have concluded whether I like women or not.

Am I the only one?