Most Helpful Guys
Communication is a large part of it. You don't ever want to let communication die out, because if it is only online thus far, then you don't yet have the physical closeness if communication should fail. Stay true to yourself, and hope they stay true to themselves as well
Honesty and trust with communication.
Its hard to be in a relationship when you're worried that the other is going to find someone irl and cheat on you behind your back. Communicate and be honest. Be sure you're both willing to commit exclusivity with each other.
Most Helpful Girl
Communication and trust is main. But to really be able to make your relationship more fun, you can try out doing things together as if it is like any real life relationship. Watch a movie together online. Play an online game or learn a new language together, compete on your scores. If possible, mail him love letters and gifts. Build your relationship like it got no distance (not possible I'm some cases but of course we can do nothing about that). Feeling close to each other is the best feeling ❤