How do I make it up to him?

i had??have?? a bf n yesterday me and some other dude kissed, n now he is mad so how do I mke it up to him? I really do love him.

Print him a free pass to kiss two other girls of his choice.

He's probably wondering why you kissed another guy if you "really do love him." Maybe give him a little space and then see if you can repair the damage with a sincere apology and try to convince him you can be trusted and honest.

You got yourself in a tough situation because right now I would guess that he's not just mad he's probably devastated. Just think about it, if you say you love him he probably loved you and then you go out and kiss another guy. He probably feels like you dont have the same feelings for him as he does for you and that he isn't good enough. If you want this to be fixed it might take a little bit of time but you need to let him know that you "love him" and that you made a mistake and basically just tell him how you feel