When I was an undergrad, I dated an engineer (me in EE, she in optics, so very similar fields mathematically speaking). No girls in my EE class. One in optics. Two in Mech E. I didn't find the related fields to be a problem at all. No girls in my grad school class either.
Married a school teacher. She might, no she does, have a thing or two to say about engineers. But since we've been married more than 30 years, you can probably guess it's been fun!