why?

i knew someone, a very pretty woman... well not so so pretty but she does look good. She meet a lot of guy but he only love one man.Lucky for her since she look good this guy like her too and courted her and then they were a good couple. they were together for almost 10 years now.
A couple of months ago this guy decided to work outside the country for him to earn more. For almost 10 years being together, this girl that i knew felt puzzled and was thinking.
"does this guy love me" because the guy used to want him around now is gone...
Having him for 10 years is something but the question that rolls to her head is "Why is he keeping me". Does he keeps her because he was used having her on his life...
That idea keep on rolling on her mind and until now it keeps on turning all around her, i can tell.
Is it really true? A man will keep her because he was used having her? This girl i knew felt so bad cause for the 10 long years they are together he never asked her to get married and until now she keep on hoping that one day he will asked. If ever she pops up the question and asked him when will they marry he never answer and shift te topic to a new one...
Why can't he love her? Why can't he just leave her if he dont love her anymore, Or if he does love her why not marry her and have a family like normal couples do...
I guess this girl deserves her happy ever after, I guess this girl deserves to be loved. I guess this girl is worthy enough to be loved and to feel that she is loved by someone...
The feeling that someone out there do love her, do care for her and wants to grow old with her, have kids with her and spend the rest of his life with her...
Why can't he learn to love her the way she want to be loved....