Jabrill Peppers was arrested on Saturday after his girlfriend told cops he roughed her up, according to court documents obtained by TMZ Sports ... but the NFL player is adamant the claims are untrue.
Officials wrote in the docs that Peppers' GF alleged the New England Patriots safety got violent with her at around 4 AM ... after she got a phone call during intercourse with him that he didn't like.
Authorities say she stated he demanded she leave his apartment -- and pushed her out of the bedroom while they were both naked.