Talked to this girl and I'm not going to say OMG, what an achievement! I didn't care mostly, I knew her from class and whatnot. This is what I'm confused about.

She was on the other side of the room and ended up coming to my side, sat next to me. Chatted and had fun. Anyways, talked about the class we're in.

She gave strong Eye Contact, her body faced me which is also a sign of IOI. Very rarely did she look elsewhere or shifted her body. Now here's the bombshell. I know she has a boyfriend, seen them together. Very close. Even openly stated it to the class and me.

Throughout the class, she looked in my direction when I was talking to others and whatnot. Body faced same direction.

This reminds me of another girl who pulled me to the side, asked me something personal regarding her classes and what decision to make, asking me to decide for her on the spot. I gave her my reasons and suggestions, conversed and then we split after the semester but something was there. I can feel it. Same body language.

I have a moral code and will never cheat or be caught in a cheating thing to let you know.

My main request for some answers is this from veterans. I'm not trying to game nor am I a player. Explain if I'm reading body language/IOI wrong. I hope it's this and not the other alternative. Also, some links to properly read body language would help.I'm sensitive to some obvious clues but the more subtle/obscure ones are hazy.

TLDR; Know girl from class, talked, has boyfriend, give IOI but could be either very friendly or misreading the body language. Maybe too much in my head but similar to another memory from a while ago.