Soul-bonding is a rare occurrence with only about 10-12 confirmed bondings in America each year. Soul-bonding occurs when two souls are such a perfect match that they call out to each other across time and space. The rarest, and therefore most yearned for, type of soul-bonding is called the Twinflame. Two souls who find each other in each reincarnation, so not even death can destroy their love.
Soul-bonding is a romanticized notion.
The Alexandrine Institute for the Study and Tracking of Soulmates has this to say on the subject of soulmates-
"[Soulmate:] A person with whom you have an immediate connection the moment you meet — a connection so strong that you are drawn to them in a way you have never experienced before. As this connection develops over time, you experience a love so deep, strong and complex, that you begin to doubt that you have ever truly loved anyone prior.
Your soulmate understands and connects with you in every way and on every level, which brings a sense of peace, calmness, and happiness when you are around them. And when you are not around them, you are all that much more aware of the harshness of life, and how bonding with another person in this way is the most significant and satisfying thing you will experience in your lifetime. You are also all that much more aware of the beauty in life, because you have been given a great gift and will always be thankful."
Children are taught about how perfect, wonderful, and sacred Soulmates and Twinflames are. It is what everyone should aspire to. And the lucky few who achieve this fairy tale should be looked upon with awe and reverence.
Tony isn’t fooled in the slightest; his own parents are living proof of the ugly truth. Soul-bonding isn’t the sacred or glorious thing that people, novels, and television make it out to be, and not all soul-bounded couples are happy.
The statistic that never gets mentioned is that 2% of soul-bonded couples have broken-up/divorced —each and every case highly publicized in the news, because people believe soul-bonds are sacred and everlasting and want to know what went wrong.
Then there are the soulmates who aren’t happy but stay together anyway, because that is what society expects of them. So they are trapped in a never ending cycle of misery. That is the situation his mom is in, waiting, constantly waiting for her soulmate to make her life perfect, and growing increasingly bitter, resentful, and withdrawn the longer the ideal eludes her.
Howard and Maria Stark are soulmates, but his mother is so miserable and Howard ... Howard is obsessed with his work, and finding Captain America (and the Super Soldier serum in Captain America’s blood) that his attention is divided three ways: the company, the bottle, and Captain America.
Sure, his mother once told him how his father used to be everything she ever wanted. Loving and attentive, completely devoted to his Cinderella. But now his mother drinks and stays out late to forget a husband who is never there, not since she became pregnant with their son.
When Tony is only two years old and Howard’s search has yielded nothing since finding the Tesseract, he turns to the bottle to forget his woes. He seems angry all the time and comes home from work tired, only to lock himself in his workshop, and as soon as he is done fixing or inventing, he will celebrate with a three day drinking binge.
Maria drowns in depression. She does her best to remain an attentive mother, but the days she can't get out of bed become more and more frequent as Tony gets older. Many days Jarvis is the one to take care of him, telling Tony his mother just "feels a bit ill today". Tony won't understand until he's older that his mother was ill with a sickness of the heart.
Things get some what better with the advent of anti-psychotic drugs. His mother can at least function most days. Howard still remains distant and uncaring. All the way up until the day of his and Maria's death.