Why do people pretend to be other's best friend?

Answer 1

Because, most of the time they are insecure or lonely and if they want to fit in with a certain group of people they will dress the way they do or act like them, so the people will eventually like them or let them hang out with them.

Eventually, over time this comes to an end, either the people of this group see what the person is like or she/he moves onto other people and groups.

As For the boyfriend part (i think you on about that either that or best friend) it is pretty much the same, if they are desperate enough and like the person enough they will want to look the the guys "type" for example if he has had an ex girlfriend who he really liked and they split up the person might try to be like his ex girlfriend because he might like her more and go for her because he is still hurt over this girl or he dates a lot of people who look like that.

Hope i helped, even if just a little bit :)

Answer 2

There could be many reasons for this. maybe the pretending person wants to get the benefit form the other one in various ways, the pretending person is lonely and desperately needs someone to be with and be looked after. Or maybe its just for fun. Yes it is annoying to see people pretending just for the sake of it but all we can do is ignore!!