Help? not aure what the best thing to do? (best answer 10 points) :)?

well i been dating this guy for 5 months and it was great in the bginning and now i just been finding out that i was lied to in the beggining he lied to me about a few things jus so i would like him or whatever. but i later found out that it was a lie. lately i feel like i cant trust him because he has lied before nd i feell like i cant trust him. we only talked for like 2 weeks before we went out becaus eit was jus all flutterly love in the begginning becasue he was a good looking guy nd he approached me first nd it was surprising to me, i thought it was all a joke but it was true it was amazing in the beggining i loved every second i had to spend with him and now its jus like whatver i really dont feel the spark anymore i geuss i just have all the bad in the back of my ind everytime i am with him and there is another major problem, he is just a complete opposite of me, school is very important to me and i try my hardest every day and never break the rules, he on th eother hand is not afraid to break the rules doesnt do well in school and can be disrspectful to authoritry we also dont share the same interest and listen to totally different music nd all i have jus grown up differently then him nd as time goes on im beginning to realize more and more that he is not the right guy for me, friends have told me stuff but it is hard to trust what they have said and i have a very busy life nd it is hard to fit him in often so its hard to every hang out nd all. i fear that he is a totally different person then i had thought from beggining im jus beggining to have doubts that he is not for me. he has done nothing wrong to me so i wouldnt really ahve a great reason to break it off so idk if i should give it some time nd see where things go or break it off or what, what would u do if u were me? help! :) the longer the responses the better :) thanks