It sounds to me that you are finding flaws in these girls as a defense mechanism after you realize you like them to prevent yourself from getting too close so that you can't be hurt by them. You want to be with them but don't think you are good enough so you succumb to the perceived inevitability that they will break up with you since you don't see yourself as being worth their time so you prevent that from happening by just attacking any potential flaws in their character so you can stay distant.
This all comes down to a confidence issue, its hard to gain confidence, but without knowing all that much about you, its hard to tell you what you need to do or change, so I would find a girl that you know that there is no way you will develop feelings for to try and hang out with more, (if you don't have someone that you already know) whether its a related family member or hanging out with a friend and his girlfriend, so you can just hang out with girls and not have to worry about going through the process of falling in love with them then tearing them apart in your head.
Other than that just try to go out there and do stuff with your friends in social groups, get out there and put yourself out there, call and text your friends and start hanging out with people, being out and around friends will help boost your mood and esteem and hopefully help you build some confidence, and maybe also broaden your interests as this might help you get involved in something you really like which could also help improve your confidence.
Don't call or text your friends once and if they can't hang out immediately give up and call it a day and go back to your normal routine, and if you start to feel like you are the one who is always calling or texting them to hang out and want to wait and see if they will contact you to hang out, don't do that, get the fuck over yourself, because that's passive aggressive bullshit, and I hate when people do or say that as just a side note.
Find an event going on where you live, whether something on a campus or just in town if your friends are flaky on just dinner or "hey lets just hang out" plans. Basically, don't give up till you make sure you have an extremely active social life and I an almost guarantee this problem will work itself out, I dunno if this last bit is really that great in terms of helping with romantic relationships, but seeing as you are currently pretty inept in that department, I am just assuming that your social relationships could use a boost too, who knows.
stormborns
romaincrisis
2087
snowghoul
discoholicmusic
andulkaphoto
