Well, number one rules out any chance of avoiding such thang....and as for numbers two and three, well that only leaves one possibility - meet someone and marry them and never break up.
But, that might not work and just lead to more heartbreak.
I am guessing you are young?
No intention of being patronising, but you know the heartbreak issue - all the things you list - are part and parcel of life and being alone at times doesnt have to be such a bad thang if you are confident with yourself.

No girlfriend in the last 3 years.......but you're only now 19! slow down, chill out. It'll happen. Being on here helps, but if you dont mind me saying delete the bit about your weight, no one needs to know how many kg you are or laboring the point about no car or diabetes on your profile. Your profile should be to sell your good points, what a nice person you are, what great company you'd be etc. etc. And as for the no car thang, not alot of kids your age can afford one - even older people sometimes cant - having a car isnt such a big deal anyways.
Think of your profile as your Personal Life CV, be positive!
Meanwhile, get stuck into the forums and have fun!
As for the loneliness, get out and about meet people, join a club make friends so you wont feel so isolated.

you cant stop your heart from breaking from lonliness but you can help it stop sitting round on the computer and go out with family friends, you dont have to have a partner to stop feeling lonley. i havnt had a partner for ages but i dont feel lonley because i always have people around me and someone to talk to.

how do you stop your heart from breakeing out of lonlyness?

Hmmm..This is a nice question..Will for me I stop my heart from breaking loneliness,I keep myself busy,bonding with my other and all filipina friend here.Thinking that I am not alone and I do this for my family and to my future,because being far to my parents and leave my country which is philippines is not easy because thats my country and I am here in am here in abroad for them and to my future.