Don’t let people tell you that “real friendship’s don’t need constant interaction.” That “absence makes the heart grow fonder.” Don’t let that notion prevent you from keeping strong connections. Relationships need to be constant and frequent. You can’t expect anyone to truly remember you if you don’t make them remember you. I’ve lost one too many friendships from lack of interaction and eventually those relationships became awkward acquaintances to practically nonexistent.
If they pop into your head, drop them a call. Give them a text or let them know you’re missing them. Good relationships are too hard to come by to risk losing them to “the test of time”.