Focus On The Good, Not The Flaws, Of Your Partner
As relationships deepen, it becomes easier to grow annoyed and aware of the flaws of your partner. While the initial honeymoon phase will inevitably die out, intentionally dwelling on the best qualities of your partner will actually help keep those sparks alive.
We all have a tendency to get caught up in negativity. Even when we have a lot of great things going for us, we still focus on the few things that are frustrating or inconvenient. While this is a natural tendency, it's a dangerous one if left unchecked, and is especially dangerous when it comes to romantic relationships. We date and marry knowing that our partners are imperfect (as are we) and choose to love them in spite of those things, as focusing on their flaws only leads to stagnation and frustration.