closed fence heart lock love love lock metal padlock protect atmospheric berlin bond bridge endless love eternal love germany lockpick lockpicks locks love locks lovelock lovelocks luck marriage Padlocks pink promise protection red red heart remember romance romantic together valentine valentine's day wall wedding attached coloring colors colouring colours communicating communication display displaying engraved expressing expression informing join joined linked locked love-locks name named names New old rust rusty shiny sign symbol symbolic trend trendy affection key love heart passion soul texture city close colorful concept culture custom emotion forever friendship hang happiness human iron link loyalty pair sharing steel tradition two unity youth key heart love lock bars captured jail shape