Reason #1: Too many bottled up emotions

Relationships are emotionally overwhelming, taxing and a high investment on both parties. It takes the very best and very worst of individuals. Men are supposed to be strong supporters and a healthy masculine presence in a relationship, but even the best men can become emotionally overwhelmed and consumed by their intense bottled up emotions.

When a man cannot handle the emotions being thrown at him, he will become anxious, high-strung or at times even shut down. If he feels inundated with stress and cannot cope with all the emotions in the relationship, he will eventually walk away from the source of his angst.

Reason #2: He feels like he can't live up to expectations

What happens when you never feel good enough for someone? You feel disappointed and discouraged that you will never be what your partner needs you to be. Men who feel like they can never live up to the expectations of their partner often walk away, as a way to escape the negative feelings of disappointment that constantly weigh them down.

Reason #3: The ugly outweighs the good

What drives a man to commit himself to one woman and one woman only? What exactly is that feeling that is so powerful it turns an independent man into a fawning and adoring partner? Love, appreciation and devotion. Think about your current relationship- does your man feel these things in your relationship?

If your relationship is in a constant state of negativity and stress, then a man will begin to wonder why he is committed to a toxic relationship in the first place. If the bad is constantly outweighing the good a man will likely walk out in hopes to find a relationship where he will always feel loved, appreciated and adorned.

Reason #4: His physical expectations are not met

It is true- relationships all have an intimacy standard and each partner often has their own set of physical expectations they expect to be met. What happens when neither partner is satisfied with their physical relationship?

"They become guarded with each other. They stop confiding in each other," said psychologist Lori Gordon. "They wall off parts of themselves and withdraw emotionally from the relationship, often into other activities—or other relationships. They can't talk without blaming, so they stop listening."

Once the passion has been extinguished and has left the relationship, who is to say the man won't leave as well?

Reason #5: He can't see a bright future

Sadly we have all done it, especially in the beginning of relationships. We have all created mini life tests that question whether the person we are dating is future-proof. Men who do not see a future working out or being as they imagined will often walk out on a relationship before the emotions become too deep.

Reason #6: He can't handle codependence

This reason is equal parts applicable to men and women- if you have given everything up and invested all that you are and ever hope to be to this one relationship, your man may walk away out of his need to breathe.

Giving up hobbies, friends, family time, neglecting all the things that once defined who you were all for your relationship comes off extremely needy, clingy and codependent. Men who feel as if the person they are with has lost their own personal source of happiness and rely heavily on him for their joys will likely walk away.

Reason #7: Admiration is lost

Strong, happy and long lasting relationships are not given but are built and fortified with admiration. If a man does not feel adored, he will likely walk away. The small things in a relationship matter most. Do you still text each other good morning and goodnight texts? Do you still laugh at all his funny jokes? Do you still kiss each other goodnight? Are you taking care of the smallest and most mundane details of your relationship that remind him you still love and appreciate him?

If you are not, your man will likely question what his purpose in your life is and will likely walk away.