AITAH for dating someone I'm not physically attracted to but view her as a great human being and potentially a future mother of my children?

I don't want to go into details but I met a woman who I didn't find attractive whatsoever at first but I instantly clicked with her in terms of future plans, view on life and the conversations flow naturally without any awkwardness or either of us having to carry it? She told me upfront that she wants to have 2-3 children and she's dating only for long term. We're casually dating but I haven't told her the truth about the lack of physical attractiveness however the more I talk to her the more I start to care less about her physical features and more I start to like her. Is that weird? AITAH for not telling her? Mind you we have been out together 4 times total and we see each other once or twice a week at this point.

Can physical attraction develop down the line? Am I leading her on or is that something that happens more often? Never been in this situation but maybe looks don't matter as much as people say they do. She's not ugly by any means but she's just an average looking woman that was never my type but at this point I don't care since I'm 28 and I don't want to waste time on casual dating.