I messed up with Anna

I feel so awful. Anna was the best girlfriend I ever had. Sweet, funny, smart. And I just... I got bored. That's the only way I can explain it. Life felt like it was on repeat. Same dates, same jokes, same everything. So I started texting this girl from work. Nothing serious, at first. Just harmless flirting. But then it turned into more. A couple of kisses after work, then one night, I went back to her place. I didn't tell Anna. I just kept lying. Acting like everything was normal. Eventually, Anna found out anyway. A text message popped up on my phone while she was using it to look up a recipe. She didn't scream or yell. She just looked at me, and I saw all the love drain out of her eyes. It was worse than any shouting match. She packed her bags and left. I tried to apologize, but she wouldn't listen. I haven't heard from her since. It's been six months, and I still think about her every day. I miss her laugh, her hugs, even her annoying habit of leaving her socks everywhere. I screwed up big time. I hope someday she can forgive me, but I don't deserve it.