I am in love and dont know what to do! ?

I have been with my girlfriend for about 7 months now, and i have been through alot with her and i have told her that i am in love with her and she feels the same way back i am in yr 12 at sixthform and she is in yr 11 and i feel that when ever i am with her i feel as though whenever i am with her i feel as though i dont want to go away from her i personally enjoy spending more time with her than actually being at home ! but lately she has given me time but it has always been with her mates there at the schools break or lunchtime! i said to her this morning i want to get off my chest that i want atleast a day with her where i am able to spend just "our time" together and she said to me that i dont give her enough space with her mates and she trys to give me more and that it feels as though i keep asking for more ! she sent both of us on a break together all i can think of is her and i really dont know what to do because eventhough her friends and other people say it looks as though she treats me like ****! i tell them that i still love her ! i will do anything for her but i just dont know how to show it because i have never been in a relationship as big as this! so all of this is new to me! HELP!!!!!