Hey guys. Got a situation. Not sure of this goes here, I'll ask anyway.

Brief background. Went out with a girl for a year. Great relationship. Breaks up with me. Fucked a guy a day later. Only told me they kissed. Spent 2 months trying to work relationship out. She strung me along, she had already picked that guy.

As the AFC at the time. I tried keeping a friendship. Didn't work. After half a year finally got over her and just ignored her. She tried to text me. Ignored her. She sent me this huge long 4 text explanation. Apologizing. Wishing to talk it out one last time. But realizing what I want. Saying good bye.

Now comes to today. She knows I don't want to talk to her. But I'm taking a summer class with her. I've run into her so many times. Every time she looks at the ground or her phone. And one time she gave me a very timid smile.

My question is. Is the best way to go about this to just ignore her. Should I say hi. What's the best way to do this? How to keep an alphaness in this situation? General help would be appreciated. Thanks.