You shouldn’t have falsely accused your boyfriend. The police don’t like to be lied to. I don’t know if there will be any repercussions for this though. They probably at the least need your statement to complete their paper work. They were called to the scene because of an alleged assault and when they arrived they discovered that no assault had take place. All that information need to be in the police report, descriptions of what happened, they need to take statement from everyone involved and witnesses, etc. Whether or not you would face consequences for it. It considered misused of the 911 system, to exaggerate your emergency but it’s kind of a grey are, at least your case, I think. This is what this report on managing 911 abuse and misuse states:
Exaggerated Emergency 911 Calls
Sometimes 911 callers intentionally exaggerate the seriousness of an emergency to get a quicker police response (although it is unclear how extensive this problem is). For example, a caller may falsely report “shots fired” when calling about a dispute or assault. Such 911 misuse is difficult to prove because the caller might simply claim, for instance, that he or she heard shots but did not actually see a gun fired. In other words, the caller knows there is enough room for “caller error” that he or she cannot be charged (or prosecuted) for the exaggerated 911 call.
I don’t understand, though, why the police told you to say you weren’t scared. You were, weren’t you? That’s why you called them. I hope you didn’t say it if you weren’t scared if you were. You should tell the truth.