Love square? Help please

I'm confused and feel like a bad person. Let me explain. I have a boyfriend who I love. But there is a guy who I have a crush on and a third guy who likes me. The guy who likes me gave me a stuffed animal from a claw machine and I feel guilty for accepting it. The guy I like called me cute today and it made my heart flutter. There is a saying that goes something like "if you like two people go for the one you started liking later because it means you didn't really like the first person" I don't know how much truth this holds. I'm not sure if I'm over reacting or if I really should feel guilty about this. What should I do?