I literally got fooled by a girl here.

2 days ago, I was chatting with a girl here who kept her age range hidden. But after chatting I came to know she is 20 and I am 20 too so we are same age. That day we were having such a nice chat. She was being so sweet to me with all the virtual hugs, cuddles and kisses. She was also complimenting me a lot and even said me that I am literally the best person ever. I also complimented her a lot and she was also calling me cute. But yesterday she has shown her other said. She messaged me saying "I am sorry your life sucks but I can't stand this conversation anymore. You are like a small child." I was surprised and asked her why is she saying that. She said "You are too sweet. It's like I am drinking water full of sugar." I was confused and asked her why she said she can't stand the conversation and then she said "I was just pretending to be nice to you but I couldn't stand it because you are such a baby." I asked her why is she being mean to me even though I was being nice to her. Then she replied saying "I am not a nice person. I just pretend to be nice so people would like me but I am actually a very mean person." I didn't write her anything mean and still tried being nice and wrote this "I am sure you look cute even when being mean haha." She replied whatever and we didn't chat after that and she didn't block me too. But it's strange how she was being so nice 2 days ago but yesterday she was being mean. That shows not every girls find my chatting cute and she prefers adult chats. I got fooled by her.