Iv got problems with how my life is going.?

ok iv recently gotten back from a 8 and a half month stay at a private school that was pretty much boot camp with better uniforms. things were fine for a while, but i did some stupid stuff and it cost my mom and me a lot of money. That's the first thing that happened. then i met this girl who i was in love with, she left her boyfriend (my best friend at the time) for me. things were great for a while. then i learned that she was 14......oops. so anything sexual was way out of the question. my mom who i still live with sadly caught wind of it and things got worse from there. me and her still talked for a while still held hands, but no kissing. then even though i still felt strongly for her, one day she up and said that we should back off a little for a while. any ways i found out that she had found another guy that she doesn't even know if he likes her. that almost tore me in half. i felt that if i was still 16 or 15 things would be ok. but that's not the way things work. so for a while things got rockey but smoothed out after about 3 weeks. we still hung out at school and talked. i still felt horrible but chose not to express it. my mom had taken my phone and so that distanced us even further. now to my current problem im almost at the end of my rope here. i brought a small pocket knife to school about 3 days ago. i had taken it out to cut a loose thread and and put it back in my pocket thinking that nothing would come of it. later on that day i got called into the office and then sent home till Monday when they said that they would suspend me for 10 days to investigate with the possibility of getting expelled and iv only got 4 1/2 weeks left till the end of the year. now its day 3 of my suspension and the girl i was talking about text me and said that we shouldn't be friends or even talk. i feel that we shouldn't either yet i don't want to lose the feelings i have for her while at the same time i know i shouldn't feel this way about a minor. it just seems like one bad decision leads to another. well my life is pretty much f-ed up huh. well if any one has any advice at all post it no matter what it is.