I'm not gay but my new coworker is the most attractive person I've ever seen

Last month I was introduced to my new coworker. He's the most intriguing and attractive person I've ever met and I'm guessing that what I'm feeling now can be easily identified as gay panic. I'm not gay, I'm pretty surely straight, I've had multiple girlfriends in the past and I've never looked at another man in the same way I looked at them. Hence my utter confusion.

I'm also getting misleading signals from him, about his own sexuality. And I'm having a hard time interpreting his actions and comments. First, I don't even know his age. He might be around 30, no more than 3 years older than me. He's very elegant and distinguished? And precise in his work. He always comments on how great of a team we are. And how he's glad we met.

He never really talks about his family or friends, or even hobbies. Except cooking. Which brings me to my last point. He invited me for dinner. In his house. I'm not sure if I'm the only one invited but at this point I'm too afraid to ask.