Well Mj and Felicia could start to grow closer then go out for a night on the town together since Peter is off being Spider-Man, maybe MJ had tickets for the pair but something came up and Felicia volunteered to take Peter's place. They'd go to a club or something and Felicia would flirt with a woman and MJ would get jealous or a bit annoyed...Felicia could be the first and/or only woman that MJ would have any interest in. And maybe MJ or Felicia would be the one to suggest or bring up the three of them together after Peter couldn't make up his mind...or something along those lines...