<human>: Could you distill the essence of the text into 1-3 sentences?

Hi, so before I start, I'd like to say that yes, I know it's wrong to snoop and that I'm paranoid and a terrible person. But I do have a legitimate reason not to fully trust him, he and I both agree on that. We've been together for 11 months. Now, onto it.

So I found a journal I gave my boyfriend as a gift, and being curious I thought I'd read a page. He started writing in it when he left to another province for a competition. What I found was documentation of girls he's met, what he thinks of them, how pretty he finds them and how they sat with him and how his friend who went with him wanted to spend time with these GIRLS. Note, he didn't write about any boys or anything, and he also wrote about how much time he spent alone with these girls. There was nothing written about him cheating, but I also came across a page where he referred to me as his ex girlfriend (we weren't bf/gf at the time, but we WERE exclusive to one another). 

I told him that I read this and he was understandably mad, and I promised not to do it again and I won't, but I just didn't realise at the time how much time he was spending with so many girls. Now, should I be worried at all? I didn't read the whole thing, so I don't know if he cheated or not, but it DID sound like he was flirting. I haven't brought this journal up again but I've been growing increasingly worried about it, and I'm just wondering if this is at all justified? And if the things he wrote in his journal is at all normal behaviour?   Thanks.
<bot>: Bf[17] kept a journal writing about his relationships with other girls, not sure if I[16] should be worried or not?