Fun with my Neighbor

I live alone on third floor of an apartment building and mostly work from home. At 32 and not in a relationship, I do fairly okay sex wise. Usually, one-night stands, but recently I cracked on to my neighbor 37 married to a 51-year-old and had no children. Seeing in the elevator regularly and both home most days alone. I got her into my bed and started a several months romance, which she suddenly finished last July. In October I saw her with her husband in the elevator and she was pregnant, nothing was said. But now I wonder if she seduced me and not me seducing her, maybe I was used to produce a child. No worries I don't mind being a selected stud if that what really happened.