What does the lover mean by playing with his brain?

"Lovers talk about playing with their brains" means: they burn their brains too much, they worry too much.

Tell me about things around me:

My best friend is an open-minded person and dressed in fashion. On the contrary, her husband is a dutiful person and very orthodox. With the change of time, my best friend felt that her husband was too old-fashioned, so she also had an opinion on him and found a lover outside, which was her leader.

At first, it was very sweet. It can be said that we were inseparable. We got together when we found time, and sometimes we went out to travel. But as time went on, there were more and more troubles.

First of all, on the girlfriend's side, she asked her lover to give him a birthright. The lover just meant to have fun, which eventually led to differences between the two people. When my best friend is free, she plays with her lover. The lover who got it was also a headache. Later, his lover said this: "I don't know what to do together, it's really a brain."

Yes, the relationship between lovers is very dangerous. If there is such a problem between husband and wife, it can be solved calmly. However, if the relationship between lovers gets too big, both sides will lose in the end, so when it is broken, it will be broken to avoid future troubles.