<human>: Give me the gist of the text in a nutshell

I'm sorry if it sounds vague, but that's what this is for me too.

So recently(2 months) I started dating someone, I love her very much, but I'm already walking up against obstacles here, which are probably caused by my experience with cheating women in the past. She tells me all kinds of things from her life, including how often she masturbates and what she uses to get off to. A few days ago, she told me that, while she was single, she went on a camsite (chatroulette, omegle, don't know) and masturbated with a stranger, but she didn't feel regret.

Now I know that's something that happened before me, and I'm not blaming her or hating her or anything like it, but hearing so much about her masturbation adventures and now also the camsite thing makes me feel REALLY bad, just, really bad, angry, sad, and I have NO idea why. I wish I could say that it makes me feel inadequate, or jealous, but somehow it doesn't feel that way, I just can't seem to be able to name the feeling right, it's 'just' bad.

I know from her side that she's very logical, or something like that. She experiences masturbation as the feeling and only does it when she feels the desire, she told me she doesn't even need fantasies for it, though it does help. I, on the other hand, love the intimacy of it, I love the act of doing it together, it makes me feel complete.

I just wish someone could tell me why I feel this bad, it's not like I'm super expecting her to cheat on me or something.
<bot>: My gf is masturbating and telling me about her one time masturbation with a stranger in the past, but I don't know how I feel about it, apart from it feeling 'bad'.