For me, long distance relationships are hard to maintain as it requires a lot of effort. I don't really like that kind of relationship, that's why quite a few men decided to stop being with me. Anyways, I read in Cosmopolitan, that for a LDR to work, you must trust each other. Because trust is the foundation of any relationship. Given that you must prioritize trusting your partner over doubts and fears. If you give in to your doubts and fears, jealousy would come next, then things will fall apart. You do not want that, so keep trusting him and encourage him to do the same as well.