Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: So I recently posted about my co-intern, who I had a disagreement with. Needless to say, we left it unresolved. I haven't spoken to him or seen him since (except about 3 days ago when I walked into the building and he was sitting in his car). 

I had suspected my co-intern of messing with the software on the station/server I was using for the past month. I have confirmed today through the software support line that indeed, the software can only act up if another person logs in. There being only 3 interns (including me), and the other person is my good friend, the only logical person is the other intern who hates me. 

So to explain: AL (good friend), Y (intern who hates me). AL and I have issues with our software. She'll have it first some days because she'll change stations after Y leaves the office. I come in right after Y leaves by a few minutes. I'll log into whatever server is free. On days that she changes out, she has issues first, but it will immediately happen to me next. On days that she doesn't, it happens to me only. I figured out that when you log into the software when someone else is on, you can see the preparer's name (I work with tax software) at the bottom of the software page. This is the part that gets me: Y never has issues with his software and AL never has issues when she working with him. (Everyone knows everyone else's schedule. If AL isn't working with me, she's working with him).

Needless to say, this makes me inefficient at work and slows me down when I could be done with a tax return 20 minutes earlier. 

It honestly pisses me off and since I have confirmed it 100% (I don't want to accuse anyone unless I know 100%), I want to talk to my boss because now it's not just personal. It's affecting my work. 

Would I be the asshole if I told my boss about this issue? 

telling my boss