Man I feel triggered as shit content warning : cheating

At the start of my relationship my girl sent photos to a guy online of her naked body. Apparently they spoke about sex and shit and then after a day or so she cut him off. She mentioned it like 3 years later to me when we had cut shit off and thinking of getting back together.

I just kinda stared in shock for a bit but then just asked her why and all the normal questions. I called it cheating and she insisted it was not. Anyway flashfoward now and were possibly getting back together soon and she had an online friend. Apparently she sent a pic of her face to them and said it’s because she's confident enough.

It’s just a photo of her face. Nothing more. Still I low-key feel triggered as fuck by it, because like what else are you talking about? I ain't tryna seem controlling because used to have pretty big jealously issues in the past. Shit stinks though and I don't know how to feel about it.

Apparently too she had a guy jack off to her and she forgave him and they're friends now. Kinda feel sketchy about her being online, what do I do?