when will this end?

I don't usually open my heart up on my blog, but at this hour.. none of my friends are awake to talk to me..

I thought i was doing good.. after the divorced and break up, i tried to pick up the pieces.. went for short trips, hanging out with friends, getting occupied with the new house, going to the gym and even started cooking again BUT i instantly broke down in tears again, when i was being told by C that he is proposing to his new gf.. 

I was with C for almost 2 years.. and the 2 years wasn't smooth sailing, as usual in a relationships there were ups and downs.. i started to wonder, how can he said he loves me for almost 2 years, left me, started a new relationship in 2 months and now engaged?

Was i so blind to see that, the 'I love you' wasn't sincere? to me, when i said those 3 words, i will mean it.. i wiil stick with the person through thick and thin to overcome the relationship problems and NEVER call it quits.. a part of me is just so angry.. so angry at myself for falling too hard on a guy and treating them so nice til they took advantage of me..

In a relationship, i am not calculative.. i don't draw the line.. for instance, i don't expect the guy to pay for every meal.. if the guy needs something and low in cash to buy, i will buy it for him.. when the guy has financial problem, i will help him out.. and when the guy said he needs his rest during the weekends and doesn't want to see and have lunch/dinner with my mum, i will be fine with seeing my mum myself.. when the guy wants to stay home, i will keep in accompany.. and if the guy wants to eat at home, i will cook.. and i know how guys hate to clean the house, i will clean it WITHOUT complains.. when the guy has to travel frequently for work, i trusted him completely and won't disturb him with text messages..

My friends said that i am just too nice.. doing all the things that the guy wants and pampering him.. and that is when the guy will take advantage.. it just hurts so bad that i gave them my heart and what i got in return is a broken heart.. and also tears.. 

When will this pain go away?? will it ever go away?