I hate to be the bearer of bad news, but trust is one of those fickle concepts that, as a result of the evil inherent in human nature, can never truly be developed. Frankly, I project myself as a warm, friendly guy whom you can trust, but rarely will I ever tell friends or even family members secrets of my own. Always maintain a healthy dose of cynicism, 'cause humans are the most vile creatures on this earth--both in literature and in real life.
That said, I do encourage you not to be so preoccupied with what others think of you; if they really don't like you, you'll find out all too soon. Remember what Dr. Seuss said: "Be who you are and say what you feel because those who mind don't matter and those who matter don't mind." Moreover, it's important to be frugal in revealing your life to others and to take care that you don't, as Urban Dictionary phrases it, blow your thought wad. When people feel like they know everything about you, which often can be the case if you tell them too much about your life, they lose interest and, in turn, gain irritation. Believe me--I have a friend who tells me about everything that goes on in her life, and while her stories captivated me and made me feel special at first, the act grows old when it repeats endlessly. Please don't follow in her footsteps.
To sum up, don't worry about what your friends may or may not think of you and just content yourself with who you are. It's okay to share your secrets with those close to you, but try to keep some to yourself; no one is completely trustworthy or capable of absorbing too many stories without some ugly means of regurgitation.