Maybe he just wants to laugh at you. Girls are very boring. After all, they have nothing to do and they are not very addicted to games. The first one wants to see that the other person is not doing better than themselves. Full of a sense of superiority; the second possibility is that you still have the other person in your heart and pay attention to him; the third possibility is just to check the circle of friends. Whatever that possibility is is a reflection of his current life. She just wants to see how you are doing, and if you are worse than her, she will make fun of you. Don't ask me how I know.
Nowadays, technology is very advanced. You can add contact information with a mobile phone. Video chat is equivalent to face-to-face chat. It is very convenient. It is nothing, just casually strolling around. Maybe I just want to know how you are doing, but there is no emotion involved. Don't even think about it. After my boyfriend broke up, he still entered my space frequently? I sometimes enter his space, it's nothing. However, I no longer have contact with my ex-boyfriend. The kind of person who is a stranger. Just relax.
Maybe he just misses you and wants to see if you are doing well. If you have him in your heart, you can try to contact him and maybe you can get along. There will always be a place for you in her heart. Even though she can't be with you, she definitely can't let go of you in her heart. Or... this is just a habit of hers. She still has fantasies about you and doesn't really want to break up. If you want to marry her, find her. Girls sometimes use their own methods to test whether their love is reliable, and then they do things that make boys look uncomfortable. Things to understand.
Maybe she just clicked in accidentally, but your thinking is too complicated. You still have to let go of what needs to be put down, and there is no need to make a fuss about destroying anything. Why linger on the love that has passed? There is a long way to go in life, so just let things take their own course! She just sneaked into your space, it's nothing, you just need to open your heart to a better life in the future, instead of stopping to watch your past. The past may have been wonderful, but it is not worthy of your nostalgia.