<human>: Summarize the given text in a few sentences.

I use to be very introverted and not socialize much and became very nervous when it came to talking to females. Once high school began, I grew out of my introverted ways and easily made friends. After 2 years into my college life, I began to date this girl that I had liked tons and was SUPER attracted to throughout high school. The relationship was amazing beyond belief for the first two weeks or so. After those first weeks, conversation was a little more difficult to come by and I began to get nervous when there was silence between us. After about a month she decided that we should go on a break so she could focus on school and work so that our relationship wasn't taking over our lives. Two months past by where I held hope that we would get back together. She then told me that we should just end things and told me that I didn't do anything wrong but things between us should be over. As a result I became depressed and withdrawn. I ended up not talking to many people and not doing much with anyone and almost becoming a hermit.
<bot>: To this day (about 2 years later) I'm still struggling to make conversations with people and I have gone back to being nervous about talking to girls. What happened to my social abilities and what can I do to fix what happened?