Is it normal im monogamous but only want sex from guys?

To start, I am also a guy.

I don't consider myself gay or bi, not because I don't want to be considered it or anything, out of fear of ridicule. I'm perfectly comfortable with my sexuality.

So basically the situation is;
I've had multiple long lasting relationships, the most recent two have spanned between 1-3 years, and all have been with women. All of my relationships have been entirely monogamous, and I've never "hooked up" with a girl. I hold sex with women at a higher standard than anything else, and it is a really special and emotional experience for me, especially when you really feel like you love that person.

In addition to this, I have a very strong, very very intense desire to have sex with men. The most recent girlfriend I had told me that she wanted to have a foursome with me and her close friends (they were very open friends, and they are also good, trustworthy people). I immediately said yes, and could only think about the other guy that was going to join us. I like to be choked and play rough, and play the submissive role. When I think about dating or marrying a man, it makes me cringe. I've never been on a date with a guy, and when I use Tinder I always have explicitly told the guys that I am in no way interested in dating or above, everything is physical. I've never felt a burning emotional attachment to a guy, and I only find a very slim portion of guys attractive.