Love a father, and you eventually must grieve his death. Love a son, and eventually you must grieve his leaving. Love the world, and eventually you must grieve its changing. Love fortune, and eventually you must grieve fortune lost. Love a woman, and eventually you must grieve her betrayal. Yet love change, and you will never be dissatisfied.
Actually, I'm paraphrasing a quote I heard once and cannot place... and don't personally believe in all of it.
I think part of the problem with love, is that we don't truly love as much as we obsess and get comfortable with. We possess, we integrate, but we confuse all this with 'love'. I think love, like any other term, is too broad a statement, and in need of further definition. But without straying into that territory...
I love my wife dearly, and I know that means that I would do any reasonable thing she asked of me. I also knows that means allowing her freedom of action, because true love doesn't constrict, confine, or control. I love her as her, so I don't seek to make changes in her; yet I understand that change is a part of reality, so I also love those things in her which do change. I separate sex from love, the two acts being somewhat related but not inseparable, so my love for my wife is not tied to sex. If we have sex, wonderful; but this doesn't mean more or less love is involved. If we don't have sex, it doesn't mean I don't love her. If one of us has sex outside the boundaries of 'marriage' this, too, has no bearing on love. Each of us is a separate person with his own rights, feelings, and desires; my love for my wife does not automatically turn off my base physical desire for sexual stimulation, nor does it demand possessive jealousy to prevent her from exploring sex beyond our bonding. The fact is, our love DOES tend to limit our desire for others, simply because we are satisfied each with the other, but it has not always been so, and may not be so in the future, and we're alright with that.
I love my children, but my love for them necessarily includes acceptance that they are their own people. Each child must grow, develop, and find their own life. My love for them doesn't include a need or want for them to stay little forever, or for them to stay at home or close to home. My love for them WANTS them to venture out on their own, to make the inevitable mistakes of life, to grow and learn. Marlin learned the hard way, that you can't protect your children from everything - he had to let Nemo experience life, not shield him from it. And when the day comes, be it at 18 or 16 or 24, when my children spread their wings and leave the nest, my love of them will be fulfilled and satisfied, whether I ever see them again or not.
I love the country I was born in, but this doesn't preclude me from being critical of its leadership, or indeed of the entire structure of its politics. Nor does love of my country mean I never want it to change. I would embrace a revolution in this country, if I thought it would do good for our nation. My national love is a dynamic thing, and stagnancy within a nation is counter to what I love about the U.S.
I love life, but the very thing I love most in life is change. Change and experience. Watching old things crumble and die, watching new things form and grow. I would be very self-limiting if I 'loved' life the way it was in the 1980's, and obsess over the things from my teen years. Granted, I still enjoy music from the 1980s, but there are some absolutely amazing musical journeys that have been accomplished since then, and I love music deeply, so I enjoy the amazing sounds emerging from modern artists. And although I love movies from years ago, I'm in love enough with movies in general to recognize the value of the changes that take place through the decades, to recognize how much improved the filmmaker's art is over what it was decades ago.
And, most of all, I love experience and knowledge. Good and ill, every experience, every knowledge, every fact, is vital and important. Some may be unpleasant, some may seem trivial; but the more you know, and the more you experience, the more you can understand and the better you can make your own life. One thing I've learned from not avoiding negative experiences: this, too, shall pass. Change is inevitable. No matter how bad the now gets, tomorrow is a new day. Sooner or later, down turns to up; sooner or later, something good can and will happen in your life. So even the deepest slump is not cause for despair. I've been completely down and out several times; and always, something happens to turn it around. I've also been on top several times, and always, something happens to turn it around. Now, at 32, I've stopped 'hoping for the best' and 'lamenting the worst' - I'm on the roller coaster, and I'm enjoying the ride of my life. One month ago, we were unemployed and barely managing rent and utilities, eating ramen and feeding my kids the cheapest food we could give them and still be health-conscious. Now, I've got my first civilian driver's license ever, I have a fairly good-paying job that I didn't even try to get (just sort of fell into my lap), and life is on the up-swing. We're even looking at a nice, healthy Christmas this year for the six kids!
This is the true nature of love - to love change, to love things for what they are, what they were, and what they will become. To love without possession, or greed, or control. To love without restriction. To love in spite of character flaws, or any other issue. When you can embrace this form of love - love that never knows jealousy, or spite, or disgust, or fear - you can know, truly, that love is eternal, that love never dies. Alas, rare is the person who can love in this manner - I am one, but I know no more than three out of the thousands of people I've known, and one of those was a pupil of mine, one a mentor of mine, and one is my wife.
Most people cannot embrace unconditional love. They feel like they HAVE to possess or control; they feel like love is a license to lord over their lover, or their child, or whatever. They feel like love should override all else, and of course, they are wrong. They think that love of a mother for a son should be stronger than any bond the son will make in his own life, or that the love of a man for a woman should somehow prevent the man's physical desires of other women or men, or that the woman should, because of her love of the man, desire to change about herself whatever necessary to please the man. So most people will never truly know love in their life.
But love is worth it all, if you can find it.