It could be quite literally anything. But they never love you simply because they enjoy your company or you make them happy etc. they always want something. Always without a shadow of a doubt. They come back because they need something from you and you don’t realise until it’s too late. If they’re not benefiting from you they’re not interested anymore. The moment you stop doing shit for them the love evaporates almost. Revoking your access from most people is probably the most peaceful thing a person can do.