My Relationship Struggles

Over the past couple of weeks me and my girlfriend have grown apart, we still talk but emotionally, what we had just isn't there anymore, i try to make an effort but it not turning out the way it was. also, the relationship between me and my parents isn't going too well and I am constantly finding myself either getting frustrated at, or in a verbal argument with one of my parents. I've also noticed that i haven't really got any true friends and that being a sarcastic assh*le has led to no where but loneliness. I may be like this to cover up my insecurities i have of myself; one of which is feeling ugly and not worthy of others. I am feeling very alone and have no one to talk to and i would appreciate from the bottom of my heart if someone were to take a few minutes of their day to help me.