<human>: Hello Reddit,

I'd like to talk about something a bit personal here. So for the past month I've been dating a beautiful and hilarious girl that I'd wanted to date for the longest time. She's perfect in almost every way and even is as crazy as I am in bed. We spent Christmas and New Years together, and she's falling for me pretty hard, as I did.
However, for the last day or two, I've been thinking about my last ex, I'll call her Emma. I dated her for a half year and we had a lot of memories and I loved her a lot, but broke up because she was really dependent on me emotionally and a bit crazy sometimes. I dont want to talk badly about her, because she's one of the nicest people I still know, and helped me out a lot in my times of need. Lately though, I've missed her a bit. Her style of humor and our memories have gotten to me and it's made me question a bit whether I should have broken up with her in the first place (although we were a bit of a mess here and there). 
What I'm asking is, am I going through something normal? Or should I really think about going back? I really do love this new girl, but should I just throw away the memories and relationship me and Emma had? I just want to clear my head.

Thank you Reddit for your help

Can you condense the text into three sentences or less?
<bot>: dating a beautiful, smart, hilarious girl but am thinking about going back to my ex (somewhat crazy but full of memories).