The most important thing about relationships is to maintain an open and truthful line of communication, to talk about the way that you feel about things. If this a relationship that you really want to keep "long term" you have to be willing to put yourself out there and run the risk of getting hurt, he has to do the same that's where trust comes in. You have to be open and honest about your feelings and your expectations, what you want or need from the other person and he needs to do the same. Your still very young and some of these things you learn with time but as long as you have good communication with eachother you have a great chance of working things out no matter what it is. Relationships are hard and require a lot of work, you have to continually nurture it and get to a certain level of intimacy with that person (not sex) in order to have that long laying connection. Remember, you BOTH have to want it and you can't "make or force" someone to be or act what you want them to be. Good luck hun :)
Before I got pregnant I could never say no to my baby daddy. He always asked for this and that and I felt like if I said no he would leave me. I spent so much money because I just couldn't say no. Just say it girl. Trust me the worst that can happen is he gets mad a little bit. But he'll get over it. Just talk to him calmly is my advice. Don't be scared to say no. Don't turn out like me lol