I'm eighteen years old, I met my "boyfriend" when we were in our sophmore year. The beggining of our relationship was wonderful! Though we didn't see each other as much as we would have liked we made the best out of the time we did spend together. We made it to our first anniversary, fighhts and arguments and all the good stuff but we made it. Second year, junior year... (oh wait i forgot to mention since the beggining of our relationship there has always been this girl who is endlessly in love with him, till this day), during the summer of sophmore year this girl was basically always talking to him, she knew every detail about our relationship the whole nine yards. She has always tried to separate us anyway she can everytime me and him fight she's always there to say something that will make him idk i guess see things about her.

senior year.
everything was alright until i decided i wanted some time, i meant that because i wanted to be alone for a while get myself straight i didnt know if i still wanted to be with him or not. i thought that i wanted to live high school years like eveyone else. but he wasnt much for the idea, once i said that he took it as i no longer wanted to be with him at all. all this was in november. but the whole time the girl had been in the back, begging him to be with her, or at least thats how i'd rather think of it as. but as soon as she found out she started to try to get to him more. by january she gave up her virginity to him.... . I still after two years had not. and in january he still told me he loved me. february i decided i was ready to go back to him. and he was fine with that. months went by and i thought we were doing fine. till may came. a "friend" asked if i was still with the same guy and i said yes why? he said that his friend was with him?,,, what the hell? and yes according to her they had been dating since december! ughhh. i cried entire weeks. after i confronted him about it he lied to my face a couple of times till i had the guts to pick her up and met up with him. then he had no choice._(let me make it clear that this whole time to all his friends and mine I WAS HIS GIRLFRIEND.she was only his SIDE DISH) she kept talking to me after that. and got all types of ideas in my head... like don't go back to him bc if you do he'll do it again... you're stupid if you go back while this girl was all for him and talking to him. while i still had anger twoards what had happend.so i didnt talk to him till mid june. then things started to sail to a new horizon. we talked he came over we made "peace" and then i left the country for a month. still kept contact. now were dating again and on the tracks to happiness. then this girl comes back around telling me that they have been talking the whole time again and all sorts of stuff which bothers me so much bc i know he still has her like on fb and stuff. so agh idk what to do, but recently he;s been talking about moving in together or getting engaged but my parents are not for the idea about that bc they say were too young and that i deserve someone who will treat me better. part of me does want to and part of me doesnt. what should i do?