Being used?

Well this week has been spring break for me...And all of this week people have said that these two girls are useing me for liquor and for rides to the beach and shit....All of my freinds have said this...I have hung out with the girls before spring break they were in my class and shit...But all of my freinds at diffrent times and diffrent people have said "man Andy they are useing you" "your there bitch" "Andy when are you goin to stop being a taxi for them" But to me it dosent fell like they are useing me. and one of the girls I have fellings for and shit and I think she knows it. I just cant say NO to her or her best freind. And now if I say oh iam goin to hang out with them my freinds try to talk me outa it....So dose it sound like Iam being used? Because if I am...I am goin to confront them about it and then see what happens. But dose it sound that way or are my freinds being jellos (sp)?