If you really love someone, then you don't mind to fall in with their wishes. A loving relationship is give and take like you say, so really it is beneficial to each partner that they talk about what they want to do.

If for example one wants to do something as a couple but the other doesn't, then maybe the one who doesn't can relent in return for doing what they want another time. In a relationship we all need our own space so it is a good idea to also have separate interests. This keeps a relationship going. No one can spend 24/7 in each others pockets because the relationship can become stifled and lead to failure.