u/Apprehensive_Win4604

I'm 29 and she's 28. we've been married for five years. I found out she's cheating on me. she always gets home late lately, always hides her phone I'm nearby her. She's been avoiding me and my approach. I got confused, scared, and even thought I was the problem. I did most of the house work, work from 5-9. I work at a small construction company as a site manager. And one night I unlocked her phone while she was sleeping and found she's cheating with her coworker for three weeks now. Has anyone been through the same thing and help me on what I should do? I love her, but I'm scared if I'll disappoint her if I confront her.