Should I date someone as an adult If I met them when they were underaged?

i was a sr in high school and I was on the dating app called skout back in 2012-2013 when they had the 13-17 year old age set up. I just had turned 18 and I met a girl who said she was 16 turning 17 in two weeks. We never sent nude pictures and we never saw each other. We talked on the phone twice and then had an argument and then stopped talking for a while. She followed my Instagram either late 2013 or early 2014 and that’s when I realized she was literally 13 years old when we met scrolling down her page. She told me she was pregnant and once she told me that even though i didn’t believe her I treated her like she was like a sister giving her advice etc. We kept in touch sporadically because we followed each other on Snapchat she would send me pics of her “so called” daughter and I would see how she is doing. I didn’t talk to her for about 3 years and she posted a Snapchat when she was 21 turning 22 and she looked so beautiful I replied to her post. We talked still like friends but I liked her. And I can tell she liked me too but it was an awkwardness involved and I don’t know if she felt the same because I didn’t ask her. We hung out about 4 times I wanted to make a move so badly but I just couldn’t because that was in the back of my mind. I have a younger sister with an 10+ year age gap and I wouldn’t personally like that. So I feel like i would be a hypocrite if I pursued her. She even invited me to her apartment and we talked about dating sites and I said I don’t like them. Because at this point in my life I don’t and she acknowledged that we met on a dating site. So when she said that I sort of ghosted her because I just don’t know if I can do it. And I have a dilemma because I actually like and care about this girl but I’m honestly worried about how people would react if we tell the truth about when and how we originally met. I just want to hear you guys opinions please don’t bash me I’ve never been with any underage. I’m currently 29 she’s 24 years old

Should I date someone as an adult If I met them when they were underaged?
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