I think my bf is bi-sexual and cheating with a man

I need some opinions. I’m pretty sure of the reality but really need some insight on how others would perceive this. 

My bf and I have been dating for 3 months. I won’t go into details, but based on some things he enjoys along with random behaviors that I’ve questioned and we discussed, I suspected he may be bi-curious or bi-sexual. Which for me, would be okay. He did deny it multiple times though. 

Fast forward to yesterday and he sent me a text that said “don’t worry I do baby 👨🏼‍❤️‍💋‍👨🏽” … he quickly edited it to our usual emoji and it read “don’t worry I do baby 👩🏾‍❤️‍💋‍👨🏼” … that caught me off guard! I asked, what’s with that emoji (👨🏼‍❤️‍💋‍👨🏽)?! First he said “I didn’t see that it was a guy” … I told him that doesn’t seem reasonable because in order to make it kissing as 2 men AND different skin tone, you’d have to manually do it! So then he said, “A little bit ago I had used a bunch of emojis and so it wasn’t in the recent so I remade it but I didn’t realize I did it wrong so it was in my recents and I accidentally used it” … This still doesn’t make sense because even when you preset the emojis, they remain. You don’t have to remake them. I told him that I know he’s lying and I just want to know why he’d lie to me about why the emoji was recently used. He said “Babe I’m not sending kissing emojis to a guy 💀💀💀” … I said, uhhhh I never said you did so why are you denying something that I never mentioned?! RED FLAG! After that I just told him that if he’s going to lie, we’re done. He insisted he wasn’t lying and that he accidentally hit that emoji because he was “tired” 🤦🏾‍♀️ he also expressed how we talked about our future together and he’s not just going to let me go over a misunderstanding and that I’m throwing it all away so “easily” over an emoji. He said he wanted to talk about work and he’d explain because he doesn’t want to lose me. I said sure, but only in person. He skipped that and attempted to keep texting. I said listen, I’ll talk ONLY in person. HE DENIED MEETING, SAID IM EXPECTING HIM TO BEG. AND AGREED TO BREAKING UP!!!!!!! That screams guilt!! 

Now, like I said, it all speaks for itself. But PLEASE! back me on this and tell me you’d think the same thing that I’m thinking and I don’t even have to say it 😭😭😭