Am I wrong for being jealous that my girlfriend vowed to give one of her friends a compliment each day?

NateBoogles
Okay for context

I feel horrible because today was supposed to be awesome, I was rehearsing to get in a band and I was really nervous about it and hoped my girlfriend would remember from last night that I had it today and would give me the good ol "You can do it!". Today she gave really dry texts and she never really said anything and I had to remind her that I was leaving for rehearsal even then I never really got anything so I was worried that something was up all day. fast forward to later in the day and I find out that she was crying and feeling depressed all day which cleared all my suspicions up so we get on call. We talk for a bit then she brings up how she was talking to this guy and she said she vowed to give him compliments everyday until he took the compliment. I feel very conflicted because I initially thought she didn't talk because she was depressed but then it was because she was busy complimenting this dude whomst I don't even know. This is like my first relationship so I don't even know if I should brush it off or. Even then this makes me feel so insecure and just depressed. I want to talk to her about how this made me feel and I would like an outside opinion on if I'm being fair or not.
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Thank you guys so much, You all are the best. I appreciate the responses and tough love. tis needed <3

I slept on it for a while to see if I felt different in the morning. I asked her about it and she told me to calm down and that it was just a friend and I expressed how I thought she was dealing with shit and bla bla. I ended up feeling like I was dismissing her depression and apologized. I realized that I was being crazy and that acting like that would just make me lose trust in her.
Am I wrong for being jealous that my girlfriend vowed to give one of her friends a compliment each day?
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