<human>: So, the title explains the situation. We have been together for 8 years and engaged for the past year. At around year 5 we broke up for a year while she finished college because it was too straining on the both of us. But when she graduated, she came to find me, told me she was still in love with me and we were honestly a stronger couple than ever.

Yesterday I found out that 2 weeks ago, while she was at a memorial service for one of her old friends, she cheated on me.

I have felt since she got back that something was wrong and I asked her multiple times. Her answers seemed cagey at best, so I found proof. I then confronted her without the proof and she continued to lie. Once I told her I knew what happened and that I had evidence of it, she told me everything.

It hurts, but I'm still in love with her, I still want to be with her, but I don't know how to trust her now. She's currently staying at her best friend's place. I told her to stay there until she can figure out if she was still in love with me and if she still wanted to be with me, but haven't told her what I want. I'm confused, hurt, angry and scared.

Can you summarize the given text in a few sentences?
<bot>: my s/o of the past 9 years cheated on me 2 weeks ago and I don't know what to do.