She has a boyfriend but shows some signs of interest?

Anonymous
I've known a girl for about a year now. She is very nice and I really like her as a person in general. She has a boyfriend but has done some things that have me curious. She will do things like go out of her way to talk to me and be in close proximity with me. She's also initiated physical contact with me numerous times, which was the biggest indicator for me.

So, what do I do? Am I reading into this too much? I don't want to come between a girl and her boyfriend...
She has a boyfriend but shows some signs of interest?
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