Luke 6:31 Do to others as you would have them do to you.
If you determine your level of commitment based upon your judgment of your partner's level of commitment, it will not be long before you are not doing your part and will find yourself very disappointed, blaming the other. So, you are responsible for 100% of your part - loving, honoring, and cherishing - no matter what. This may sound like a hard rule, but it is the best opportunity for YOU to be satisfied/ happy. Doing otherwise does not protect or serve you in any way.
Note: The "no matter what" above assumes that there is no abuse/ violence. When that is part of a relationship, the abused partner may do the most loving thing by incorporating physical distance for protection and to disallow the abusing partner from having the opportunity to abuse.