How am i going to get over my trust issues?

Im only 15 years old, I know I have plenty of time to find that right someone.
But one of my fears is being alone for the rest of my life. How do I overcome that?
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I think the reason this is becoming a fear is because, Every guy I have dated has...

treated me like crap!
And plus I dont have a father figure to look up to...
I just cant trust Men anymore.
Please tell how to deal with it!!!

Stay single, focus on school dont worry about it stop looking for guys and wait for them to come to you and start likeing you and want to date you. If some guy starts likeing you get to know him alot and tell him about you and if there is anything you dont like about him or he dont like about you then dont date him.
I have been though enough with guys and I cant get this guy I totally love back so I am just gonna be single and focus on school it will get you farther in life then a guy can, and never trust anyone but yourself

Trust is a very fragile thing, a living organism if you will. If you trust someone and they you, the trust grows and the relationship flourishes. But, when the trust is broken then the relationship suffers and in many cases never recovers. It's hard enough to your age with all the pressures and decisions to make. Not having a father figure makes it even harder for those times when dad is needed. Do you have an older male relative you trust? A pastor? A teacher? There must be someone you can use as a sounding board.
Don't worry so much about guys right now anyways. We tend to make fools of ourselves quite readily. Besides, find out where you want to go in life first. Get yourself grounded and do your best in your studies. Should mr.right come along sometime down the road great. Don't push for a relationship as the right one will come to you.
Hope it helps