Love can take many forms, from passionate romantic love to familial love. There are several types of love identified in ancient Greek - eros (passionate love), philia (friendship), agape (unconditional love), storge (familial love), and mania (obsessive love). Being in love is expressed through body language like making eye contact, smiling, leaning toward the other person, and constantly thinking about them. However, love can also be weakened by behaviors like misbehaving, ignoring, lying, breaking promises, avoiding contact, and doubting the other person. Different kinds of couples can also exist, such as romantic couples who plan things for each other, playful couples who joke around,