20M - My Asian gf might be cheating on me I need to chat

Last month my gf said she is too pretty to be with only one person, is that a real thing?

My gf is very outgoing she loves going to clubs and parties with her friends. Recently whenever she goes out she doesn’t respond to any texts and she is always meeting new guys she tells me about the next day, but she said they are just being friendly. My gf just started university in August and I’m worried she might be making some mistakes and sleeping around. Please let me know.