I've heard there are some critical times in the relationships. Like commonly after 2 years, after 7 years and maybe once more after it.. in which it's common that the first feelings have already changed and if you both aren't working for the relationship, all you have is love which may be running out and a companion who isn't working for the relationship.

Nobody likes that.

All the good for your relationship and I do hope you both follor your guidelines :)