But there is a sense of entitlement that many times develops in relationships when a guy does a girl favors, in hopes she will reciprocate.
Most people know that this is not good when it comes to dating, but I have noticed that churches do "charity" in much the same way. When engaged in acts of giving or helping others we consider "needy" there is the unwritten expectation that those people will reciprocate by comming to church, and in short order getting saved. We are in fact inviting them out on a cheap date in hopes of getting something from them in return.
This leads to the very real sense in which we try to buy people for the kingdom. We put on community festivities, humanitarian projects, and vacation bible schools, but these do not actually earn us a hearing for the Gospel. We don't actually have the right to expect people to come to church or listen to the Gospel, or have some extra push to make a profession of faith merely because we have done something for them. In fact, the real result may actually be that we are attempting to exploit the poor, and though we may have helped a material need, there is shame in being used, and the victims of our charity will likely not darken the door of a church that has treated them like a cheap date.
On the other hand, if we simply develop real relationships with people and interact with them as human beings worthy of respect and dignity, then we will eventually find it natural to share not just the Gospel but our friendship, which they probably need more than our charity anyway.