so my girlfriend of 5 months has been amazing in most ways. she is kind and caring and i can already not wait to spend time with her. but she has a glaring (to the extent that i have noticed it by now) habit of pointing out that i have a friend that is single and he would do things differently. if i joke that she hates trains and i want to take a cool train ride and meet her there, her standard response is: "well your friend(X) would have ditched the train and come with me." or things like you are just a placeholder for when X is free to date again... etc. now to be clear she is joking and i know she is joking... but is it wrong that it rubs me the wrong way, her constant jokes?

furthurmore she sometimes jokes that she is not my type, i like more mature women and would prefer to go back to my ex-girlfriend who i had to get a restraining order on, since she started self-harming and blaming me for it. not five minutes before the post she commented saying that maybe i need to talk to one of my ex's friends who definitely hate me toset me up with my ex again.

this is just the basic stuff, she has mentioned multiple guys she "should get their numbers" and associated me with every girl she thinks is attractive.

how am i supposed to react to this and how do i make her understand that what she is doing this wrong and AITAH for not being able to take a joke?