Who's in a long distance relationship?

My boyfriend and I are in a long distance relationship. He lives in Chicago and I live in Mexico. I was born and raised in Chicago and just moved to Mexico in August. I've taken two trips back to Chicago already, I'm actually here right now. I just wanted to ask other people who are in long distance relationships how theirs are. I'm asking because its been 7 months and thee have been a lot of ups and downs but we're really happy and great now and I want that to continue. What do you do to keep the relationship alive and healthy? We facetime every chance we get and sometimes even sleep together while on facetime. I want to do more to show him how much I love him and appreciate him while I'm out there but I'm kinda stuck right now as to what to do. He's been doing a lot for me and I feel like I haven't been doing the same back, I'm really stuck and I just need some help.