8. When he realizes that she, along with his other friends, is very precious to him
“When I think about all the friends we have in common, it makes me hesitate before thinking about breaking up with her.” As you can see here, when a man thinks of a girl as “part of the gang,” it makes it difficult to break up. It may be a good idea to maintain a good relationship not only with your boyfriend, but also with all the friends you two have in common.