Do I kiss Jorge? No?

So I’m in this situation;
I like this kid Daemon and I have for the past year and a half, and I think I might be starting to like my other close friend, Jorge. I’m close friends w his gf, Paige, and we can talk about anything (Jorge, Paige and I).
I always talk to Daemon to ask for his advice, and with this situation, he says Jorge is jealous because he wants me to be a “side b——” or rebound for when/if Jorge breaks up with Paige. I asked Jorge what I (in the story, it’s “they (single)”) should do if “I” began liking someone that was in a relationship.
Long story short, he figured out what I was trying to say and he said he wants to kiss me after school today to see if I still like him.
I’m not sure if I should (his gf wouldn’t mind, she isn’t the jealous type and Im sure she knows about his idea) or not because I’ll feel weird knowing that happened between he and I, and I’ll feel guilty for kissing/being kissed by someone in a relationship.
Daemon always says he’ll fight Jorge if he needs to, and I don’t want that to happen. Jorge and I were talking all last night and last period (I’m at school) and said that if I didn’t want that do happen, it would be fine w him, but he wants it to happen..
What do I do? Do you have any help?