Haven't been on a date or in a relationship for 3 years.

So...I was dumped by my ex who I was with for 3 and a half years in March 2012. Since then, I've not been in a relationship or even been on a date. She was my first love so it ending hit me very hard. I always have this nagging doubt that I'll not find anyone I connect with so well again. I keep thinking that was my one chance at love. As a naturally quiet and shy guy, and evidenced by the lack of girls in the last 3 years, it's looking more and more likely that I'll struggle to meet anyone.

I've kissed girls in the 3 years and had 2 one night stands but meh, nothing deeper. I suppose i'm lonely so that plays a big part in my sadness. I just long for connecting with a girl again. It doesn't help that I checked my ex's facebook and she looks happy in a new relationship. I only blocked her on it a couple of months ago! I've also noticed my confidence and self esteem are pretty bad lately. As in if i found a girl attractive I'd either have to be pissed drunk to approach her or, more likely, I wouldn't approach her at all. Anyone got any advice for me? Feel kinda hopeless. The fact my ex now works near my house isn't helping. I previously had only seen her twice in 3 years but seeing her again makes it all come rushing back.