Regardless of how genuinely you love your partner, he/she or you might have done something that warranted asking for forgiveness. Depending on what your partner did, you might have a difficult time forgiving him/her and vice versa.
The notion of asking for forgiveness in a relationship is that someone has done something he or she should not have done. They did something that probably hurt, upset or even made their partner angry. If asking for forgiveness has become a common occurrence in your relationship then perhaps it’s not a healthy situation. If the forgiveness asked for is always regarding the same type of incident then maybe it’s time you part ways.
Part of loving someone is being able to forgive him or her.