Introverted parent. How do I keep my child from being like I was?

This might just be me remembering my own childhood and being introverted might be irrelevant. My husband and I don't have really have friends to hang out with, either together or by ourselves. The only other moms I know who have children go to the library reading program I go to every week, but they all know each other and their daughters play together outside the library. My 2 year old son is about a year younger and the only boy there. He has had little to no interaction with children his own age except maybe once a month when he attends a Y program with other kids for two hours.He recently had a birthday and I've talked about how excited I was for his party to the library staff in passing conversation. More than once as his party got closer.Well, we went to reading program after his birthday. The first thing the librarian mentioned was "I heard we had a birthday recently!" while staring at one of the regular little girls. Turns out they also had a birthday that week and we all sang happy birthday to that little girl. Then later, while they were doing a little dance, she seemed to remember and said to my son, "you had a birthday, too, didn't you?" and that was it.I was probably more hurt than I should have been, but I've been going to this library program for about a year, nearly every week except for maybe twice. I feel as if I've established myself there. It brought up a lot of bad memories of being the shy kid in school that was frequently talked over and forgotten. I was the kid who, when finally brave enough to speak up when answering a question, wasn't noticed and then someone more open spoke up louder.I do not want that to happen to my son. I don't want him to be the kid in the back of the line, who never says anything, just existing in the peripheral. I don't want him to suffer with crippling shyness that keeps him from experiencing and enjoying life. I don't see anything wrong with being introverted, but I still want him to have friends and play with other kids.But how do I make sure that doesn't happen? I want him to have friends but how does that happen if I don't have any myself? Even when trying, and putting myself out there more than I usually do, it doesn't seem like enough. I tried to sign up for swimming and tumbling classes but my son hated every minute of it.Will it be too late if he doesn't make a friend until he starts school? Will he already be too shy by then?Am I reading too much into this? via /r/Parenting http://ift.tt/2diMmbl