Time
is the greatest teacher.
Unfortunately
it kills all its students
- Hector Berlioz

It may be time to get married already!

Couples sometimes date for too long a period of time.

At a certain point you will have collected sufficient information about the person's background, family, and friends. You will be able to evaluate your own feelings well enough.

There is no way for you to possibly evaluate all possible issues, circumstances, and situations. Have you discovered all the skeletons in your partner's closet? Probably not. However, you may not not discover all of them even after another full year of dating.

No, don't rush into marriage blindly. Do make an effort to find out as much as you can within a reasonable amount of time. Do not succumb to pressure.

However, when you've reached the stage of diminishing returns, it's time to go forth and get married – or to break off the relationship.

Your list and your confidant will help. In the final analysis, you will have to depend on סיעתא דשמיא - help from Above.