<human>: Give me a shortened version of the text

I met this beautiful girl about a month ago and immediately we hit it off. She's intelligent, sophisticated and has a strong personality. She can be obnoxious at times, but mostly sparks me as a spunky and playfully sarcastic girl. 

We've been getting to know each this month. She's fun to be around, thoughtful and I discovered she's very sexual too. We're definitely flirty with each other and there's some sexual tension there. 

We hung out yesterday and I asked her about her sexual history, since she admitted to bring a very horny girl. She told me she's only been with one person, and that was a 40 year old man. She explained that she had a 5 month long sexual relationship with this guy, and that she lost her virginity to him and thought she was in love with him. To be honest, I was really disgusted when I heard that. She showed me his picture, and he's a good-looking guy I admit, but it strikes me as odd that this young, innocent looking and cute girl would have sex with such an old guy. It doesn't seem exactly normal. I told her that it was kind of a turn off, and she explained that they have amazing, electrifying chemistry and that she couldn't help but to feel attracted to him. Anyways, this really bothers me for some reason, especially because I was gonna ask her to be my girlfriend. 

My question is, should I be concerned? Am I justified in being disgusted, uneasy and a little jealous? This doesn't sit well with me and I wonder if she's not as normal and level headed as she seems. Ultimately, I need advice on whether I'm overreacting or not. I want to pursue things with her and she's a catch, but this is just weird.
<bot>: A new girl that I was interested in asking to be my girlfriend told me she used to have sex with a 40 year old man and now I'm concerned