Hopefully you already know your life path number, if you do not then please follow the link  in the footer of this article. You'll find out exactly how to calculate your life path number. Then come back here.
Back? Ok, Let's begin:
Life path numbers 1 and 1:
The nice thing about this combination is that these will be two strong, talented and quite noble individuals who understand each other's goals and desire to achieve perfectly. On the negative side of things, two ones together can find themselves competing with each other. One up manship (no pun intended) can definitely be a problem.
The sad thing about two Life Path number 1's together is that they are often separated by distance or the demands of a career rather than any real friction with each other. For the most part, these two numbers together make a nice pair and if they do manage to stick together they are quite capable of building a financially secure future together that is also filled with excitement and worthwhile goals.
Life path numbers 1 and 2:
In this pairing, one individual is the submissive (the 2) and the other is the dominant partner (the 1) This combination can work well as long as the 2 does not step out of line and demand anything for his or herself. In the case of the 1 paired with the 2, "to rule is truly to serve" if you are the 2.
Often these relationships take very classic traditional forms with the ambitious 1 out conquering the world and the docile 2 at home feathering the nest and figuring out ways to please the 1. Mostly these relationships fall apart when the 1 starts taking the 2 for granted, not giving the 2 enough attention or when the 2 gets sick of playing master and servant.
Life path numbers 1 and 3:
This is a very cheery couple that will likely inspire each other as well as share many good times. The 3 (the number of the performer) will be just challenging and exciting enough to keep the 1 continually interesting. The 3 is also great at pumping the 1's ego as they are very talented when it comes to courting, lovemaking, and entertaining.
They also make a great working relationship with the 3 being the talent or the ideas person and the 1 being the number that makes things happen. Often such a couple is very popular and at the center of a social scene. If a 1 and a 3 do break up it is often due to "creative differences" or too much criticism of each other.
Life path numbers 1 and 4:
This is not a match made in heaven simply because the 4's insecurity makes the 1 very nervous. The 4's emotionally tough past often makes turns them into a control freak which competes directly with the Life Path 1's ambition to also be in control. The result is usually a non-stop catastrophic relationship with plenty of hard-won and barely understood karmic lessons.
Accepting each other for who they are never works with this combination. Often it falls into parent / child type conflicts, codependency and addiction to arguing. It is probably best not to match-make these two numbers at all. However being opposites 1's and 4's are often sexually attracted to each other even if they are not great relationship material.
Life path numbers 1 and 5:
1 and 5's are extraordinarily compatible as both numbers appreciate the need for freedom so they can travel, make contacts, social climb and fulfill their ambitions in general. These two numbers will support each other's drive for independence and actually enjoy "missing each other" if their careers take different directions. This is the best combination of numbers in terms of overall compatibility and it is also good for long distance or online relationships.
Still there are two things that can sabotage this relationship. The first is any insecurity that might cause one number to impose their will on another. Distance or scheduling leads to a permanent split are separating the second threat.
Life path numbers 1 and 6:
This is another relationship disaster waiting to happen. The 6 is a nurturer and caretaker that wants to contain the freedom loving Life Path # 1. It is the # 6's fondest wish that the 1 focus on nothing else but the 6, the 6's family, setting up house with 6, having children with 6 and spending every single waking moment with the 6. Needless to say the number 1 is absolutely smothered by this attitude.
This relationship only works if the 6 somehow drops his or her tendency to be jealous or possessive. In that case the 1 will then enjoy the same kind of dominant / submissive relationship that he or she does with a 2.
Life path numbers 1 and 7:
Although it does not seem like this relationship can work, it does. The introverted 7 often compliments the extroverted 1 nicely. These two numbers have the ability to take care of each other spiritually and psychologically. The 7 motivates the 1 with inspiration and the 1 motivates the 7 by bringing his or her ideas in the 7.
Another reason this relationship can work is that the 7 is lost in their own world while the 1 is preoccupied with the outer world. Somehow the two of them manage to meet somewhere in between those two worlds. The only way that this relationship goes sour is if one or the other takes the other's temporary lack of focus on the other personally.
Life path numbers 1 and 8:
1 and 8's are not good matches romantically but they can be a good match in business. Usually a 1 can procure needed funding to realize a project from an 8.
Romantically this relationship is a bust. Both 1's and 8's are so assertive and demanding that the relationship degrades into one big ego struggle. Furthermore, relationships between these two life path numbers tend to unrealistic in some way. Either expectations of each other are too high or there are delusions about who the other person really is. If this pair decides to split, the consequences are usually dire and usually include obsession, vengeful activity and other types of destructive behavior.
Life path numbers 1 and 9:
A 9 is not a bad choice for a 1. Initially a 9 brings a selflessness to the relationship that allows the 1 to be the star of the show. If the 9 can maintain this submissive position and let the 1 hog the spotlight then the relationship will go smoothly.
Although 1's generally admire the humanitarian and gracious sides of the compassionate 9 they are also secretly jealous of them sometimes. Usually these two Life Path numbers split up either because the 1 became insensitive to the delicate number 9's feelings or the 9 decided to go out and pursue a spiritual quest or mission on their own.
I hope you've enjoyed learning about the numerology compatibility between the life path numbers, if you have not already I recommend you calculate your own life path number and that of your partners and see where you come up on the chart above.