<human>: Summarize the given text in a few sentences.

Hello r/relationship! I'm using a throwaway because I'm pretty sure my boyfriend knows my normal username.

Some background: I met my boyfriend through a mutual friend while I was in my junior year of college and he was living and working in our hometown. He didn't go to college, but our towns were only about an hour away from each other. I fell hard for him fast, and so did he with me. 

While I was in school, we had a long distance relationship during the week until one of us visited the other on the weekends. We spent the entire summer together before my senior year. I decided to move back to my hometown after graduation, and we moved in together. It's been about a year and a half since we started dating.

Here's my dilemma: this guy is amazing - kind, sweet, selfless, handsome, hard-working - and I love him. But he's my first love, and my first relationship. I lost my virginity to him, and even had my first kiss with him (I'm a super late bloomer). He's my first encounter with any kind of affection from another person. It's been a whirlwind of emotions and experiences for me. 

My boyfriend has been in several relationships before and has loved before, and he's positive that he would be happy spending the rest of his life with me.

I'm afraid that if I stay with him, I'll be missing out on other experiences with other people. I do not want to cheat on my boyfriend; I love him too much to hurt him like that. I also don't really want to break up with. I just want to know how to process these feelings. 

What if I don't really know what I want or what I like without other relationships to compare my current one to? What if I am just enamored with the novelty of a first relationship? I'm terrified that the only reason I'm with him is because I don't know anything else. He's been in love before, and he knows what he wants. I don't know if I know what I want.
<bot>: Boyfriend is my first relationship/love, and I'm afraid that I'm only staying with him because I don't know anything else. How do I deal with these feelings?