<human>: Can you condense the text into a few key points?

Like it says in the title, I've been with my boyfriend for a little while now, and though we have our ups and downs, I am extraordinarily happy with him and I would not do anything to hurt him. 

However, there's this other guy that I met a few weeks ago, and I believe I have a bit of a crush on him. 

It's not a huge attraction or anything, but it's more than the usual "oh that guy/girl is cute" kind of crush that I believe is ok in a relationship - mainly because, it's not just that this guy is handsome, but also because he is very sweet and happy. I dont see this guy often at all, just randomly in passing on campus, but I enjoy his company whenever I do talk to him, and his smile always makes me happy. 

Again, I would not do anything to hurt my boyfriend, and I've already done things like never initiating contact with this guy and declining his invitations or advances. I just feel so awful because even after doing everything to avoid furthering this crush, I still feel like I'm emotionally cheating on my boyfriend.

What should I do? should I tell my boyfriend? I feel so guilty sometimes whenever I see him (my bf), but I'm pretty sure telling him would just hurt him and/or make him feel insecure. Is it selfish for me to tell him or to not tell him?
<bot>: I have a bigger than normal crush on a guy, and I feel like I am emotionally cheating on my boyfriend. What can I do about it, and should I tell my boyfriend?