<human>: I've been talking to this girl, Kate for about a month now. We started off just texting back and forth and we've gone on a few dates and fooled around a couple times. Things are definitely getting more serious and I really, really like her. I've had a couple short relationships and hooked up a bit. This is basically her first everything. 

Since we've been talking I've been talking/flirting with a couple other girls. Just normal things. A couple weeks back I did go to a party and hook up with a friend. No sex, just kissing and sleeping in the same bed. I did something similar right around the time I started talking to Kate too. Its fine when you are single but probably not okay in a relationship. 

Yesterday afternoon I'm at her room. Fall asleep and with my phone unlocked. I get a text or she snoops and sees me flirting with other girls and immediately freaks the fuck out. Hysterics. Starts crying. Asking me if I don't like her. Asking if I "cheated" on her. Eventually after some talking and fighting I apologize and promise it won't happen again and ask her to be my girlfriend. The dramatics are kind of a red flag but I really like this girl and I want to be with her only. 

I sort of hedged the question of if I "cheated" on her. My perspective is I couldn't since we weren't in a relationship. I'm sure if she knew she would consider it cheating though. Question is should I tell her about the hookups or can I keep it in the past?

Could you distill the essence of the text into 1-3 sentences?
<bot>: New girlfriend concerned over some texts I sent while we were talking. I did much worse than text and hooked up with others during the talking period. Should I tell her or is it okay to mislead her?