Should I be careful around this girl?

my friend made plans with me to go out to the club & i asked what time were going so i can leave early from this guy i’m talking to & 30 before us leaving this guy she’s been talking to for a year & even said he needed space many times called off her phone & was like hey yeah she’s staying in tonight but y’all can hang out tomorrow… & i said okay. like me and her are going, not me & him like don’t talk to me i’ve never spoken to you lol. it’s odd because one time she said my man came to see me one time we hung out & i didn’t know what to say but laugh & say what the heck , like we’ve never argued, go on trips & stuff but she's building stuff up by acting like a middle schooler when it comes to this guy lol..
Should I be careful around this girl?
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