The number of years you have been in a relationship does not necessarily show committment.
You and your partner may just be tolerating each other or simply enduring the relationship, or in some cases, you may be together because either of you are afraid of being alone.
Is this the essence of your relationship? If the answer is a 'no' or 'not sure,' then you need to dig deep and know for sure.
These are just a few signs you need to look out for if you want to know for certain that you're in a committed relationship.