If he often talks about sex with you - he hasn't had sexual desire for you yet
It seems that there is no man who doesn't like to talk about sex. Men are always interested in meaty words. As long as several men get together and talk everywhere, the topic will naturally turn to this aspect.
From a psychological point of view, most men who like to speak dirty words can't really satisfy their sexual desire, and make up for their lack of desire by verbal venting. The dirty words are also the "lubricating oil" for men to communicate with men. However, when a man talks dirty with the opposite sex, the meaning is very different.
A friend of mine once said to me, "That guy is really annoying. He always catches me and says disgusting things. I know he just wants to sleep with me!" I don't know how her relationship with her boyfriend is, but I have to point out that what she said, "He has deep feelings for me", is just wishful thinking. Maybe he really wants to have sex with her, but if she thinks about getting married or further affirming her boyfriend's love for her
Men get together to talk about pornographic scriptures, which is probably caused by the desire for sexual desire. But if you say this to a woman, it is likely that you do not have the ambition of "sex" for that woman, but just treat her as an ordinary friend.
In other words, in his eyes, this woman is no different from other same-sex friends. If he really has a love or sexual desire for her, he will usually try to suppress it as much as possible so that the other party will not notice it. Even if he has a request, he will first wrap it with a layer of sugar coat and gently put it forward.
Because of the gradual opening up of sexual concepts, many women are also very open and generous about the topic of sex. Although they are not satisfied with men's dirty words on the surface, there are many people who feel very interesting inside. The man sees through the woman's mind and speaks freely without scruples. He doesn't feel anything different, and he never wants to enter into a super friendship relationship with this woman.
However, if your boyfriend used to be informal and fond of telling dirty jokes, but suddenly changed to be polite, this is the turning point of your transition from "friend" to "lover", which can also be said to be a symbol of the budding desire.