It is interesting to see how some people talk about love for their children being unconditional, and how nothing could possibly ever change that. Then you read the many threads on here about broken down dysfunctional relationships with parents, bitterness, hatred, emotional abuse etc etc. And i expect a lot of those parents felt exactly the same way once.
The truth is it is very easy to feel that way about little children, evolution has done a pretty good job of making us feel overwhelmingly protective of them (partly by making it such bloody hard work raising them).
Adult relationships, all adult relationships (including those between parents and their offspring) are complicated and often messy. I don't think those relationships are unconditional, they just feel that way when you have a little child's face beaming up at you.
All relationships need work and effort if they are to remain good over a lifetime. A little child may make you feel that overwhelming sense of love that almost blocks out everything else, but it is the love between me and DP that forms the backdrop to that relationship, and that relationship continues to grow and strengthen as each year passes.
So ultimately, I love them both enormously and will do all that I can on my part to keep that love going. Hopefully DP (and DS when he is old enough to think about this stuff) will too.