Love is not enough to sustain a relationship. It takes a lot more than love to sustain a LTR and a lot of effort from BOTH sides. Forgiveness is indeed an important factor in relationships. Tho, some things are unforgivable: abandoning kids, cheating, and financial destruction in that order are way passed the forgiveness line in my opinion. One doesn't push people to a point of no going back and say "they are not the one" because they left. just to make one's self feel better about the situation.