Was my wife physically attracted to me at the time we met?

I was in my mid-20s when I met my future wife. I was quite fat during my teens and early 20s and had managed to lose a lot of the weight. Even though I still had a long way to go, I was able to get a six pack and was relatively lean. I had no confidence at all in my looks or how women looked at me as a person. I was a virgin at the time I met my future wife, she was the first woman to see me naked, I was so nervous. Even though I managed to lose a lot of weight, I still had a very insecure mindset about my physical appearance. I never got any attention from women, they were physically attracted to my friends, not me. I felt like a background character when I was out with my friends, and I had no expectations of women ever finding me attractive. So when my wife told me she was attracted to me, I have always had a hard time believing it. When I eventually got serious about my fitness, my wife started hitting on me more and showing me more physical attention. I always just assumed that it was because I had more muscle, was leaner and had better proportions. Compared to when I met her, I am so much more physically attractive now. Because of this, I have always questioned whether she was physically attracted to me when we first met, or if she just found my personality likable and decided to look past my insecurities and lack of confidence. What I'm getting at is that I feel like she was more attracted to me as a person, rather than physically. But ever since I got in better shape, I feel like she is more physically attracted to me now than she was when we first met. How common is it for a woman to be in a relationship with a man who she isn't physically attracted to, or am I just being paranoid?