What do I do when my friend accuses me of liking her boy friend?

My best friend and I are really close. She has a boy friend. I practically got them together. I talk to him a lot. Even about my own crushes. He became a good friend of mine. One day I walked with both My friend and her boy friend. I was planning on going to her house, but i started to see she was sort of irritated. I still had a feeling to go. so as we all kept walking we talked and stuff. I was so excited on just hanging out with my friend that i forgot to even ask her if i can go over. so i asked. and she responded "I don't care." personally i really didnt care that she answered that rudely. and so then i went and just picked a leaf and she said "dont pick leaves from ppls yards" and i said "you're not the boss of me" and then i hit her slightly with my bag. we always play around like that. and she hit me back harder and i hit her back. and she then started to run and then once we were at the corner of her house and her boy friend turned to go home, she said "want me to kick you in the face, cuz i can" and i said "go for it" and then it sounded like she said "go home" . so i said "im just going home" and she said "no i said step forward not go home" and i just started walking away. and her boy friend stopped to wait and ask me what happened, thats all! and so we walked a little. and when i got home i saw my Best friend status on myspace saying shes pissed off. and so then i asked another friend to ask her if that status is about me. and sure enough it was. she says the only reason i wanted to go home was to walk with her boy friend. and the only reason i hit her with my bag was to act cute for her boy friend. and that is completely not true!! and later her boy friend said he talked to my friend. and that she was sorry and stupid for saying stuff about me. and i said ok i forgive her. but i told her boy friend i wont talk to him anymore or walk with them since thats how i was accused in the first place. and he said oh thats fine. and now we arent all talking. well they are talking to eachother but not to me. i feel a little hurt still. even though my friend already apologized. and now we arent talking as much. i feel embarred because i didnt know that i was making my friend think i like her boy friend. and i bet she feels embarred for thinking that in the first place.this happened yesterday. and today was aweful since we kinda avoided eachother. she and him waited to walk with me after school even after i told them i would never. so i just told her NO and walked to my house. and now i feel really devastated. i really truthfully dont know why. whats wrong. do i continue talking to her. to her boy friend. ?????? what do i do????