How to behave correctly if a girl needs to be kept in good shape for some time?

I'm talking about situations when she is your “fallback option” and it seems that you don’t need to make close contact ... How to keep interest in it, but at the same time not go too far with your own? There is one great option for this task - funny pictures and videos. What should these pictures and videos be like? Yes, whatever you like - from cute kittens and memes on TV shows, ending with jokes on the actuality and funny (or interesting) pictures from life. Here you just need to feel out which of all this the girl likes more. However, one important point. You can’t pull with such a “keep in good shape” - more often in it, after a few weeks, she will begin to lose interest. It happens faster, sometimes they fall in love unrequitedly for six months. This is also a subtle point.