Love advice

Hello. I really need advice asap. So I like this guy. And lately he’s been ignoring me. I call him guy A. There is this other guy who had been talking to just about everyday. I’ll call him guy B. I didn’t know guy B’s name. So one day a guy who rides my bus came up to me and said his friend liked me. Well turns out that it was guy B. He’s funny and all, but I’d rather be his friend. But because I was too scared to reject him I said yes to start talking to him and to start dating him. The next day the guy that rides my bus called me guy Bs girlfriend. And at the end of breakfast my crush, guy A walked in and he walked over to the guy who rides my bus. I think he might have told my crush that I’m dating guy B. I saw my crush look over at me. Then my crush walked to guy B and they only exchanged a few words and then he left. What I’m thinking right now is that maybe my crush knows that guy B likes me and maybe that’s why he’s been ignoring me. I mean…your not supposed to like your friend’s crush, right? So maybe that’s why he distanced himself from me. But when I tried to talk to my crush two different time about him ignoring me, he denied it. I just don’t know. I guess I’m wondering how I can get out of this. I like guy A not B. But I don’t want to hurt guy B’s feelings. And I want my crush to know that I don’t like guy B so he can stop distancing himself from me. But how can I do that if he’s ignoring me. Plus the guy that rides my bus said if I play with guy B’s feeling then he was going to beat me up but I think he’s joking. But how can I get out of this without hurting anyones feelings. Please help.