She says exclusive but keeps making plans with other guys

Exclusive is a word with one meaning. It means she stopped dating other people. When she says it but then mentions plans with guys she knows, she either hasn't actually had the conversation to end things with them yet, or she's testing to see if you'll enforce the boundary or just let it slide.

The second possibility matters more. People who want to be exclusive but are still making plans with exes or backup options aren't confused about the definition. They're checking whether you're serious about it or just saying what sounds good. If you ignore it, you're telling her that exclusive is negotiable whenever you feel like it.

Your reply needs to do two things at once. First, name what you noticed in a way that's direct but not accusatory. Pick one specific recent example, not a pattern. "I saw you texting Jake" works better than "you're always making plans with guys."

Second, remind her what exclusive means. Don't ask if she still wants it or if she was lying. Instead, state it as fact. Exclusive means those plans need to stop. Then give her room to explain. Maybe she's still untangling things from someone else. Maybe she misspoke about her feelings. But she doesn't get to have both. Your job is to make that clear without sounding controlling.

Send this reply within 24 hours while it's still current. Don't wait until you're angry about it. If she responds by joking it off or changing the subject, that's a deflection, not a real answer. You can push back once. "I'm not asking to control your friendships. I'm asking if exclusive still means the same thing to both of us."

If she deflects again or tells you you're being insecure, you have your answer. She either doesn't want exclusive or she wants the option to keep other guys around. At that point, you decide whether that works for you. But don't keep dating her while pretending this is settled.