HELP im confused! should I leave or stay??

My boyfriend and I have been going out for 14 months now. He's a year younger than I am. Although we're both already in college, he's my 1st boyfriend and Im his 2nd. Throughout the relationship, I guess I find myself trying to find faults with him and also questioning myself if he is the one or not. He's a very nice guy. Very family-oriented, caring, thoughtful, loyal, he's patient with me, protective of me. I also like that I can talk to him about anything. But he's also addicted to video games (not that big of a deal bec i like games too), sarcastic (sometimes its funny, sometimes its not), possessive, kind of a momma's boy, he's shy around people, can be antisocial, he doesnt like it when i go to parties, drink and smoke and he hates drugs, etc. He's a very content person but i like to explore. im very curious about everything.