<human>: Give me the gist of the text in a nutshell

I have been seeing this girl for about 3-4 weeks now. We talk everyday but only hang out on the weekends because we are both busy or so I thought, more on this later. It is obvious that we both really like each other but we haven't had the conversation of not seeing other people and being exclusive but I figure after seeing each other for this amount of time that it would be pretty obvious. 

So the other day she puts a picture on Facebook of her and another guy and I text her and call her out on it. It was then that she admits that she has been going out with other guys and claims that she didn't think I even liked her which does not make any sense to me why she would think that. Then she says that she is just seeing what is out there and doesn't know what she wants. I tell her that normally when I like somebody and I know they like me I won't date other people but thats just me.

What I am wondering is am I wrong for thinking that after this amount of time that it is wrong for her to be seeing other people? Also at this point of my life I really don't need to be competing with other guys for a girl. Either she wants to date me or she doesn't. 

Right now I am at a point in my life where I don't need people in my life who don't know what they want or even have time for people like that. This winter I will be leaving to start a full time job and moving forward with my life, she can choose to either be a part of it or not but I won't be wasting my time if she continues to see other guys. Am I wrong for thinking this?
<bot>: Seeing a girl after three weeks and she is continues to accept applications for boyfriends until she finds something better. Am I wrong for thinking this is unacceptable?