Once I asked my boyfriend if he had anything to do with my best friend. He was laughing at me. After a long argument, he said I was disgusting.

I think your boyfriend may really be unfaithful to your best friend, and you may think that he is guilty, so as soon as you do something wrong, he will quarrel with you directly, say how wrong you are, and then be disappointed with you, and so on. Since you see your boyfriend sending messages to your girlfriends, if it is frequent and makes you feel that something is wrong, you should suddenly ask your boyfriend to use his mobile phone at some time, and you must use it without delay. We can't let him delete things to find evidence. Two people's mobile phones can be used with each other at ordinary times, and you can see the problem with a little gesture. If you have a boyfriend, you should also pay attention to the fact that your girlfriend can't let them get too close. Don't bring a girlfriend on a date.