<human>: Can you give me the gist of the text in a nutshell?

I'm at my wits end right now, ive caught her a total of four times, last two being a week apart from each other.

We've been together for the better part of a year and have been living together for most of that time. 

I've found out through spying on her laptop after she had been acting suspiciously when I was near it or near her phone. 

She has sent nudes, sexual messages and much more to several guys. She's talked about meeting up casually with multiple guys, but she's never met any of them she says.  These days I'm paranoid, moody and broken. How do I fix this? I love her to the moon and back, but I can't think of a way to stop hurting over this issue.
<bot>: my gf has been visiting adult dating websites, sharing graphic pictures, but I still love her and want to fix us