Girlfriend getting hit on?

My girlfriend gets hit on and chatted up in a regular basis. It bothers me, but I don't want to come across insecure so I just kind of laugh it off. Or say something like 'I can't blame them'

is this a good though though that she's tells me about them? She always tells me about guys in work, she's open about a guy friend from school who recently asked her on a date. She tells me openly about guys who seem to try and chat her up. This is a good thing that she tells me? I've always told her I like honesty. She has told me I am her everything and wants a future with me.

She also has a good few guy friends who she regularly sees. She has known these before me. Although I get jealous I accept she has guy friends. She has told me that she has guy friends but I am the only one she has romantic interest in.
Should I be grateful she is open about all this?
Girlfriend getting hit on?
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