L. I,
Later on in life, you will come to understand that marriage is a long pattern of falling into-- and out of-- love with your spouse.
It's not that we don't love each other any more, just that the realities of life do sap away the romance and passion. I had these stretches with my husband even before we married (we lived together for 8 years before that, and had our son 6 years after we got together).
We've made sure to create some fun things to do together, even when we can't get out. We spent a LOT of our son's first two years pretty much joined at the hip. We started getting a sitter when he was nearly two, and frankly, it was because I had some medical issues and we needed the childcare coverage for MRIs and ultrasounds. Romantic dates, they were not.
What I love about my husband is what I have always loved about my husband-- he is a good, good man. He is a rock-steady guy who works hard and doesn't complain and is a team player, solution-oriented. We've had rough patches and then we went to talk with someone about them.
Are we as intimate as often as we used to be? Nope. Are we as fun and exciting as we used to be? Not really. But we've grown in life together and understand that some things are more substantial and meaningful than the 'fun' and spontaneous times. We've redefined 'date nights' to mean that we have a date with each other to watch a movie or favorite show or play a game or just sit at the kitchen table and talk with each other.
Passion still happens, and honestly, it is better than ever. There's a level of comfort that comes with cultivating a relationship for this long. We've been together for 12 years now and I don't regret any of it.
One last thing: in our contemporary culture, a lot of us came from families where parents divorced, and our media images of relationships are very, very unrealistic. Not as many of us have seen our own parents fall in and out of love with each other and go through the many 'seasons' of marriage and relationship. Couples who have been together for 30, 40, 50 years will tell you that love is a bond, and that there were also stretches of time when it was like 'roommates' or that there were long, dry seasons. Some stretches of time when you are so busy *doing* and getting things done that the idea of being amorous was just totally beside the point. So, we do well, even during those more mundane times, to be noticing each other for the small things and appreciating them aloud. My husband and I do a lot of thanking each other. A LOT. It is one of the ways we keep our marriage strong is just knowing that the other person values us and the contributions we CAN make, have the energy to make.