Is my relationship ending?

Im 18 and im in college and my boyfriend is a junior in highschool. when we met I was a senior and weve been together for 6 months next week. but lately we have been arguing over the dumbest things. such as today in school my friend kristina and I were talking about we had to make up a test and this boy josh said me to ill give you my number you can call me to meet with you and we can all take it together. mind u, my boyfriend deleted all the boys numbers out of my phone, so as soon as I talked to him I told him. he flipped out and wont speak to me now. he thinks im cheating on him when actually people from hs are saying he cheated on me. but this is my first relationship and his first serious one, and I gave him my virginity and I am attached. I love him with all my heart im just so confused

Ok, the most important thing in a relationship to make it work is trust, if you dont have trust it wont survive. Now obviously your boyfriend has major trust issues if he is going thru your phone and deleting all the boys numbers out of it. It sounds to me like he is expecting you not to speak to any other male again becos he doesnt trust you, he needs to grow up and realise he isnt going to be the only male in your life, yes he is the most important and special one but that doesnt mean you cannot have other friends. Now this guy that gave you his number, if you now he is interested in you anymore than friendship, then out of respect to your boyfriend you shouldnt take his number becos that is uncomfortable, if some girl was giving your boyfriend her number and you know she likes him it will make you uncomfortable right? but if you know the guy is just a friend and wants nothing more than I dont see the problem, its your boyfriend who has the prob.
I understand that this is your 1st relationship and you are attached but you need to work out whats going on, if people are saying he is the one cheating then you need to find out whether its the truth, becos normally people who are messing around are the ones accusing the other party of cheating to take the heat off themselves, and if he is, you deserve better and unfortunetly went out with an a$$hole for your first. But things will get better. You need to work out whats going on for certain and make some choices!

If you are in college, and he is a junior in high school, there will be problems. Boys tend to mature later than girls and if there is that much of an age difference, move on and find someone your own age. If he is not trusting you the relationship will not work anyway.