<human>: I'm probably going to sound like the bad guy here. But here it goes. I met this girl in class recently, and she was super flirty with me. I knew she was younger but i went along with it. Eventually asked her on a date, went out a few times..and then had sex. Once one night and then two times another night. Recently I asked her to be my girlfriend and she said yes.

Texts me a few days later saying the age difference is big and shes not looking for anything long term. Wants to keep doing what were doing but without the relationship...is she trying to say she wants to sleep with other people but also keep sleeping with me? I might be looking too deep into this. But i'd figure i'd share here and see what others say. 
After she said that I said a brief "Oh wow, thats unexpected. Alright then. Have a good one." And havent talked to her since. Any insight?

Could you distill the essence of the text into 1-3 sentences?
<bot>: met this girl, dated, asked her out, said yes, now she wants to be friends with benefits. why?