What relationships have you had which you value the most?

If you have trouble talking to people and forming bonds, practice on random people. Go to a mall or something and talk to a vendor or salesperson at every store you visit. These are small, arbitrary conversations, so it wont matter if you screw up or feel a need to bail out on it. This will help build your confidence. If you're really socially awkward but make a connection with someone, you will probably overrate it and open yourself up to be exploited by that person if their intentions aren't noble. When you have confidence and experience in social matters you're better equipped to deal with hiccups like breaches of trust or repairing bad first impressions.