Why do I feel isolated?

I was visiting my family and I met a woman and I really like her. She likes me too. She’s smart, has a good job, is pretty hot, and has a good personality. She’s been in her career for about 15 years but she has a unique path that was unconventional. She’s one of those women that’s smart but not a know it all. She’s had career success but knows what’s important and she’s fun. I thought I could get a long term relationship with a woman like this. Someone that has her life together. But she pretty much said she’s just looking to date and enjoy life. I was hoping maybe she could be the one but I guess not. I’m just stuck. I was really hoping to find a woman I could marry. I’m 41 and I feel the pressure of it.