Completely out of left field

At high school then university I was the not seen guy, not on any bodies radar. A geek/nerd and tall skinny with glasses couldn't wear contacts as they irritated my eyes. So, years later I met an old classmate from high school and had attended the same university, but still hardly knew each other. I hadn't thought she had even noticed me, she was the head cheer leader and prom queen. I was didn't attend the prom, I had no date and so avoided going like most other events that were held except prize giving's as I always got something. I was doing quite well in my career and then my former classmate turned up to work for the same employer (2022). Still looked amazing, I recognized her straight away, but didn't expect her to remember me. At first it seemed I was right, and I kept my distance as I'd at school and university. A few weeks after she started, she came to me and asked me why I was avoiding her as we were old classmates. She asked me had she done something to offend me, I said no, I just keep to myself mostly. Like you did at school and university she remarked. I was somewhat shocked she remembered me at all and to my great surprise she asked me over to dinner on the Friday night. I accepted, as I had nothing else on, never did actually. I enjoyed the dinner and her company but wondered why she had an interest in me. I wasn't her superior, nor anything special in anyway. It turns out she was lonely and sick of wannabes trying it on with her. Nobody was seriously interested in her, just her looks. I was somewhat shocked she felt lonely for someone who didn't want anything from her and saw her as a friend, companion and not as a sexual toy to be used and discarded when they were finished. I hadn't thought attractive people could be used and discarded like old toys before. So, we started hanging out together more and more and then luck came my way. Lucky for not for her, her apartment had a fire and with not many places available to rent at the time she had to stay in a women shelter. I'd a spare bedroom and as we were friends, no sex between us, I thought I should at least offer my spare bedroom to her. She gladly accepted and we started living together, still no sexual relationship. I for my part didn't want to ruin our close friendship and she hadn't made any effort to suggest to me she was interested in a sexual relationship with me. But we attended the company Christmas party together and she stayed close the entire time we were at the party. On getting back to our apartment, she kissed me on us entering and it was a very passionate kiss. I was shocked at first but responded and we've slept together ever since. Marrying last month, now trying to start a family and are in the process of buying a house to raise our family. If when I was at high school or university you told me, I would marry her I would've thought you crazy or high on drugs.