Now everything make sense. Camila unfollowed lucy when the relationship between lauren and lucy was strong and real. So, why she unfollowed lucy if she has no reason? The possible reason is because she had jealousy and feel bad to see lauren with another girl. And if you think, camila was friend whit lucy at the beginning. Something get wrong. And i think camila left the band in part for this situation, it's very difficult to be in love with someone who's in love with another.