So usually I am not the type to ask questions on these subjects, simply because of my ego I'm guessing. However, there is this issue that has been quite bugging me and I don't want to fuck this up.

I've been seeing this girl for 2-2,5 months now, on a weekly basis. Unfortunately, because I had exams two weeks ago, and she had hers last week we've now not seen each other for almost 3 weeks. Messages are getting shorter, and it seems like I'm losing touch with her.

I wanted to meet up next monday 5 days ago, to which she agreed. Last night she texted me while I was out saying how something came up and she is sorry blablabla - I was tipsy and didn't think much of it; just answered with a cool it's no problem, we can meet later that day. Her reply: I'm not sure, I'll think about it! I didn't reply to that one and just wanted to have a good time.

Next day sobering up I read that message again and got pissed, because to me it seems she was stringing me along and I called her out on it, leading to our "first fight". After some bickering, she apologized and said I was right... I told her fine, then let's go Tuesday. Her reply; I have a dinner on tuesday, but it might be cancelled, I'll let you know. Didn't reply to that either cause what the fuck... exact same bullshit. Three hours later and she sends another message: yes dinner is still on. Me: Alright, have fun.

What do you guys make out of the situation? Am I being too selfish/needy? How do you guys make sure to maintain that level of attraction the girl has towards you?