Hey everyone.

I know that you guys hate questions like "what should I say?" or "what should I do?", but I really feel a need to ask this, as this is a unique situation in which so far I have never been.

So, five days ago, I was taking a shortcut though the park on my way back home. While I was walking, I saw a cute girl sitting on a bench and she was holding her cell phone. We established an eye contact, I smiled, she smiled back and she kept staring at me for several seconds - until I was no longer visible due to a tree. I didn't approach because it was obvious for me that she was waiting for someone. I had a bad experience in the past, when I approach a girl like that, and it turned out that her boyfriend was standing in a line for ice cream only a few feet away. So, unless a girl is reading a book and hanging out on her own in an obvious way, I'm not approaching.

Two days ago, exactly the same scenario, but this time she was talking on her phone. We stared at each other and smiled. This is a very obvious IOI and she's definitely interested.

Today I was walking back home, and I saw her walking with her boyfriend. The guy seemed super skinny and nerdy, and my SMV is definitely way above his. And while I was walking past them, the girl was staring and me and smiling, and she was not even trying to hide it!

From what I saw, this girl seems very interested in meeting me and possibly branch swinging (or at least cheating a bit). If her boyfriend was my friend or at least an acquaintance, I most likely would never consider "stealing" his girl (or ending his turn to be more precise), but I saw this guy for the first time in my life. So my question is - how should I approach this girl and what should I say the next time I see her? I know that she has a boyfriend, and she knows that I know that she has a boyfriend... and I probably have a few minutes for interaction with her before her boyfriend arrives. So I have to be quick and snatch her in front of his nose.

Thank you.