<human>: We have been together for 4 years, and long distance off and on for 2. Our relationship started out great, and I really thought we would eventually get married. I continued feeling this way until very recently. On one of my trips abroad, I developed feeling for someone else. This was the first time this happened to me since we've been together. I didn't do anything with this other guy, but I really wanted to, and probably could have if I didn't respect my boyfriend so much. 

Ever since then, I have been developing crush after crush. It doesn't help that I haven't really been single since I was 15. I jump from serious relationship to serious relationship. This one has been the longest by far. 

I feel like such a shitty person, but I really think I want to end it. We are lucky if we see each other once a month. On top of that, we barely even talk anymore. Even still, I think he has no idea that things aren't great for me. I have a hard time bringing it up, because I don't want to ruin the little time we spend together. I'm a coward and I don't know what to do. He's a wonderful person and he deserves so much more. 

It kills me that I'm going to be breaking his heart, but I'm so unhappy with where we are. Please help?

Can you give me the gist of the text in a nutshell?
<bot>: I think I want to break up with my long-term, long-distance boyfriend, but I feel like a bitch for it.