Uncomfortable with your boyfriend

Kensi
So me and my ex where really good friends and we really wanted things to work but he was lying and flurting and smoking weed and then lying to me when I knew he was. But before we broke up we were really awkward we didn't even hug till like two weeks into the relationship and he wouldn't ever walk me to class and he was always to busy to hung out and go on dates we didn't kiss or hold hands. Was it my fault did I make it always or was it him.  I feel bad for breaking up with him and I feel like it was my fault that we didn't go farther into are relationship.