Talk every day
Even if you don't see each other in person every day, 1 call every day helps. You don't need to talk all day, just a short call to keep up with each other's lives
Give a shit
Relationships start to suck when one person stops giving a shit.
Everybody loves surprises. Relationships can get predictable quickly, so use surprises to keep things spicy.
Kiss. A lot. And passionately.
Deodorant. Don't get sloppy