Just with teenagers and first kisses I should say this in not unconditional but __romantic love__ they experience, which for META-Health is connected to the ((Circulatory - Coronary Veins (intima)|coronaries)) and sexual arousal, and also often some gut feelings like butterflies in the ((Digestive - Stomach Overview|stomach)). Through the experience of being wanted and loved, teenager often resolve a self-worth issue, and this might be a reasonable explanation for the involvement of ((Circulatory - Lymph-Nodes |lymph nodes)) and the ((Circulatory - Spleen|spleen)).

As quoted, mononucleosis is not specific to one organ, but in conventional medicine connected to Epstein-Barr virus. In every case we need to look at the specific symptoms or patterns, to define what affections and associations are at play. That's why the case studies are so important for META-Health research...