You do not need anyone to complete your life, as long as you are firmly anchored. Different phases of life sometimes create unpredictable endings. As you mature and experience social interaction with different people, you must also learn to respect yourself enough to walk away from toxic relationships when necessary. Seeing or meeting someone for the first time can sometimes feel like "love at first sight;" however, be aware that your initial attraction to someone may not develop to meet your expectations. If you are going to project love, at least be vigilant of the power of your unconscious mind and its ability to disappoint you. Meanwhile, don't let fear hinder you from finding love. Have discretion; choose carefully. To a certain extent it is much better to try and not succeed than feel regret for not trying.
