Is it normal to regret something that happened with friends?

Basically last october I started my first year at university and I finally moved out my parents house. I did not know I would find it so hard but I have always had a quite sheltered upbringing and I am very close to my family- well I made a small group of friends and I tried to stay positive but as my worries grew I constantly kept asking them for their re-assurance and asking there advise- it was around that time that I was diagnosed with depression. Eventually they got sick of me, so I got scared and kept away from them, I felt like I messed everything up- one of them became hostile while I tried to stay in touch with the other two. Eventually in the second semester I moved back home and made new friends, I did not mind having many friends as I have always been quite introverted. However those girls who used to be my friends became pretty popular and they told people stuff about me which was not true- and they looked down on me- whenever I tried to be nice and smile to some of them they would look down on me and act fake. Lately its getting me down and I wished that maybe at the beginning I should have acted differently- I want to forget about it and move on but how can I when they are there in front of me everyday- is it normal to feel this way?