Cardi B and Stefon Diggs are reportedly giving their relationship another shot. An alleged source tells People that the NFL star recently "stepped it up" with the Grammy-winning rapper after the pair split earlier this year. “Cardi pulled away from the drama in February,” the source alleged. “She didn't trust him and felt like things were going on behind her back. She wasn't in a place emotionally to deal with fighting and tension.” The source added that Cardi "needed to just finish" her Little Miss Drama Tour, which ran from February to April, and "have stability for her kids." The insider also claimed Cardi "never closed the door completely" on the relationship and that Diggs "stepped it up a few weeks ago and showed her that he wants to make it work." "It was enough of an effort to get her attention," the source continued. "She still cares about him a lot." Neither Cardi nor Stefon has commented publicly about their relationship.…