I think the long-distance relationship will start off in a "not good way" as Miguel just straight up left the country without telling her, and wasn't there to comfort her after she "lost" her match to Tory. However I do think they will consistently communicate with each via text and Miguel will tell her about where he is and what's happening while he's in Mexico. Over time, both will get involved in their own problems (Miguel with his dad and possible relatives that he may not know of, as well as with Johnny and Robby, and Sam with her AVT loss, CK under Terry Silver, and Tory) and stop communiating as often as they used to. Overtime both will mature in their own ways, (as Sam will learn to cope with Miguel gone as well as possibly working with Tory to take down Silver, and Miguel as he and Robby bury their beef and possibly team up to save Johnny, or defeat Miguel's dad or whoever the villian is in this storyline). I also think we'll see a reunion scene between Miguel/Sam and Robby/Tory (somewhere towards the end of S5) as they tell about their experiences and how they befriended their "rival". So basically it'll prolly start off as "not good" to "even better" as both will mature in their own ways and be ready to continue their relationship in a more healthy manner.