My Best friend...likes my...Boyfriend!!!???? HELP!!!?

Sorry to hear that hun. It does sound like she likes him. Have you tried talking to her and/or him about it? (not at the same time of course). You could try correcting her when she says they bicker like a married couple by saying, maybe more like brother and sister. She may not have liked him until after she say how happy he makes you. Try to set her up with someone, you can even try a double date.