<human>: Can you provide a brief overview of the text?

Hey there Reddit! Just to be upfront, my problem is this: It's been over a year and a half since my last relationship ended and I've practically forgotten how to date, ask a girl out or flirt in general. So my question is, "How can I tell if a girl is even interested in me in the first place? Is there any sign or anything at all to look for?"

A little background, if it helps: I'm a 21 year old male. Senior in college, majoring in Chemistry, minoring in Visual art. I go to teeny tiny college [around 600 people, total] and the women around here seem to fall into two distinct categories: Taken or single for a reason. However, all generalizations are false, as there are some genuinely amazing women here. The problem is that none of them seem interested in me or, if they are, I am completely oblivious to this.

I'm not a stranger to dating, as I've dated about four women seriously in the past. My last relationship ended due to mistakes made on both sides and neither wanting to end a relationship, preferring comfort and "ease" over the big scary world of being single. Also she was fooling around with someone else. And then broke up with me. [Yes, I had a serious problem with being walked all over]

Since that relationship, I've learned a surprising amount about myself [therapy does *wonders*]. I'm no longer a shy, quiet, moody little misanthrope though I have my moments, like most people. I'm a generally happy, mellow and jovial sort of guy. I have more self-confidence and good friends now than I've ever had before and my life is pretty grand, if a tad busy.

The one thing I'm lacking is a special someone to spend time with and treat to dinner on occasion. A girlfriend, if you will.

So,
<bot>: Guy who hasn't dated in a while and has changed a lot in the past year and a half seeks advice from Reddit on how to date and see if there's a way to tell if women are interested.