Why do male colleagues always come to my space to talk about this recently?

Now I can only say that he is interested in you. As for the purpose of this interest, it is still too early to draw a conclusion, but one thing seems certain, that is, this male colleague wants to befriend you. It's hard to say what will happen to him next. For example, whether he wants to further develop relations with you, you need to continue to wait and see patiently.

Personal opinion, for reference only!