Relation 2- written by a friend

I am not going to talk about financial securities… last night I told someone special "people who get in in-formal relationships feel inherently insecure", I have been thinking about it, I was co-relating it to one of the incident that I saw in the close proximity of someone. One of old female colleagues fell in love with a guy and everything was great, then at some point; she got scared about losing him. She did everything and gave him everything he wanted and sacrificed her friends, her social circle. Eventually he dumped her out of the blue saying some shit. Now I am thinking, she ruined her relationship because she was inherently in-secure, not about loosing him, but also all the paraphernalia associated with him. From boy's perspective I think he may not be equipped to handle all the seriousness and emotions associated with relationship. When people get together in the first place, we tend to change and off course there's a reason. When we try to please each other, that reason is gone. And we won't respect each other. Here is another problem I think girls feel that the boys are going away, so they do more and more to keep him around esp. when girls start liking boys blindly for the paraphernalia attached rather then a person in them, and go to a new horizon. Contrary on the other side of story, problem with most of boys I know is that they just cannot say "no" upfront and just start playing games instead with the girl's insecurities to manipulate them.
Being dumped too, and after interacting with many girls I learnt to think from both the sides of equation. What I think if someone doesn't make you feel more confident and happier than before they came around, then chances of the relationship survival is less and one should end it. But the problem is we don't realize it, because we as human beings tend to get carried away and do the same mistake over and over again!